April 19, 2012: Marines clean their M1A1 Abrams Main Battle Tanks under the stars. -- Source: U.S. Marine Corps/Cpl. Tyler Main

April 12, 2012: Landing crafts arrive on the Moroccan beach of Cap Draa. -- Source: U.S. Navy/Mass Communication Specialist Seaman Apprentice Scott Youngblood

April 3, 2012: Army officers depart a combat outpost on a UH-60 Black Hawk helicopter near Jalalabad, Afghanistan. -- Source: U.S. Army/Sgt. Christopher Harper

April 13, 2012: Retired Gunnery Sgt. Thomas E. Williams fires a World War II flame thrower. This particular flamethrower was used in the movies "Flags of our Fathers" and "Windtalkers." -- Source: U.S. Marine Corps/Lance Cpl. Chelsea Flowers

April 16, 2012: U.S. Air Force F-15E Strike Eagle fighter aircraft fly in formation. -- Source: U.S. Air Force/Staff Sgt. Eric Harris

April 16, 2012: F/A-18C Hornet launches off the USS Carl Vinson aircraft carrier. -- Source: U.S. Navy/Mass Communication Specialist 2nd Class James R. Evans

April 9, 2012: A B1-B Lancer bomber aircraft readies for aerial refueling over Afghanistan. -- Source: U.S. Air Force/Staff Sgt. Angela Ruiz

Mar. 27, 2012: An F-22 Raptor returns after refueling near the Hawaiian Islands. -- Source: U.S. Air Force/Tech. Sgt. Michael Holzworth

April 5, 2012: Cpl. Richard Hardeman fires an M-249 during a nighttime round of live-fire. -- Source: U.S. Marine Corps/Sgt. Richard Blumenstein

April 11, 2012: U.S. Army Spc. Quentin Bradford, an air traffic control specialist guides two CH-47 Chinooks as they prepare to land. -- Source: U.S. Army/Sgt. Ken Scar, 7th MPAD

Mar. 30, 2012: A squadron of B-1B Lancer bombers fly over the Gulf of Mexico. -- Source: U.S. Air Force, Jake Melampy

Mar. 16, 2012: A King cargo aircraft flies over Alaska ready for aerial refueling. -- Source: U.S. Air Force, Master Sgt. Sean Mitchell

Apr. 3, 2012: The Department of Defense launches it's first-ever Delta IV Medium launch vehicle. -- Source: U.S. Air Force, Rodney Jones

Mar. 13, 2012: A U.S. Air Force F-22 Raptor fighter aircraft flies over Nevada. -- Source: U.S. Air Force, Staff Sgt. Christopher Hubenthal

Mar. 9, 2012: A Black Hawk helicopter drops 600 gallons of water on a fire in Rapid City, South Dakota. -- Source: U.S. Army, Master Sgt. Don Matthews

Mar. 20, 2012: An F-16 Fighting Falcon fighter aircraft flies over South Korea. -- Source: U.S. Air Force, Staff Sgt. Rasheen A. Douglas

Mar. 21, 2012: U.S. Army Spc. Zachary Dixson uses a spotting scope to watch simulated enemy combatants. -- Source: DoD, Sgt. Eric M. Garland II, U.S. Army

Mar. 14, 2012: U.S. Air Force Senior Airman Tara Langella sights a .50-caliber sniper rifle. -- Source: U.S. Air Force photo, Senior Airman Christopher S. Muncy

Mar. 6, 2012: A CV-22 Osprey tiltrotor aircraft is prepped in the anechoic chamber, a room designed to block out all forms of electromagnetic noise. -- Source: U.S. Air Force, by Samuel King Jr.

Feb. 8, 2012: A CH-47 Chinook helicopter lands at a remote landing zone in Shah Joy district, Zabul province, Afghanistan. -- Source: U.S. Army

Feb. 15, 2012: U.S. Navy ships transit the Pacific Ocean. -- Source: U.S. Navy

Feb. 9, 2012: 2nd Class Kathleen Gorby conducts a familiarization dive off the coast of Guantanamo Bay, Cuba. -- Source: U.S. Navy/Mass Communication Specialist 2nd Class Kori Melvin

Feb. 11, 2012: 3rd Class Eric Johnston mans a console in the command information center. -- Source: U.S. Navy/Mass Communication Specialist 3rd Class Christopher S. Johnson

Feb. 9, 2012: An Osprey makes a historic first landing. -- Source: U.S. Navy

Feb. 10, 2012: U.S. Air Force Captains Thor Boland, Mike Broderick and Brandon Lavalley return to base. -- Source: U.S. Air Force/Master Sgt. Benjamin Bloker

Feb. 13, 2012: An F/A-18E Super Hornet takes off. -- Source: U.S. Navy/Mass Communication Specialist 2nd Class Colby K. Neal

Feb. 10, 2012: Amphibious assault vehicles land on a Thai beach with aerial backup from an F/A-18D Hornet. -- Source: U.S. Navy/Lt. Cmdr. Mark C. Jones

Feb. 10, 2012: A U.S. Air Force F-16 Fighting Falcon fighter aircraft rests before the backdrop of the nightlights of downtown Las Vegas. -- Source: U.S Air Force/Chad Bellay

Feb. 10, 2012: Royal Thai Marines push forward as CH-46E Sea Knight helicopters with Marine Medium Helicopter Squadron 262, 1st Marine Air Wing, fly overhead during an amphibious assault. -- Source: U.S. Marine Corps/Cpl. Garry Welch

Feb. 3, 2012: U.S. Army Sgt. Aaron Sweeny and Staff Sgt. Robert Novak watch a firing exercises from a mountain top near Forward Operating Base Salerno. -- Source: U.S. Army /Spc. Ken Scar, 7th MPAD

Jan. 26, 2012: Cpl. William Hopkins looks through the scope of the Barrett .50 Cal. -- Source: U.S. Army

Jan. 10, 2012: A paratrooper has his iris scanned using a Handheld Interagency Identity Detection Equipment, or HIIDE system. -- Source: U.S. Army/Sgt. Michael J. MacLeod

Feb. 2, 2012: The Modular Prosthetic Limb (MPL) is a brain-controlled prosthetic that has nearly as much dexterity as a natural limb, and allows independent movement of fingers. -- Source: U.S. Navy/Sarah Fortney

Jan. 31, 2012: An F/A-18C Hornet launches from the Nimitz-class aircraft carrier, the USS John C. Stennis. -- Source: U.S. Navy /Mass Communication Specialist 3rd Class Benjamin Crossley

Jan. 10, 2012: A Hercules cargo aircraft fires off flares used to counter, confuse, and redirect enemy heat-seeking missiles during training. -- Source: U.S. Air Force/Master Sgt. Dave Buttner

Jan. 19, 2012: Marines conduct insertion exercises from a CH-53E Super Stallion helicopter. -- Source: U.S. Navy/Mass Communication Specialist 2nd Class Alan Gragg

Jan. 18, 2012: Special Agent Adam Deem, part of the U.S. Air Force's Special Investigation Detachment, shines light on a glass to reveal fingerprints. -- Source: U.S. Air Force/Airman 1st Class Micaiah Anthony

Jan. 12, 2012: U.S. Air Force parachutists attempt to set a three-point, 32-way college record during a jump competition. -- Source: U.S. Air Force/Lt. Col. Mike Love

Jan. 25, 2012: P.C. Lujan Elemetary School students are shown how to maneuver the MK II Talon robot (used for bomb defusal) during career day. -- Source: U.S. Navy/Mass Communication Specialist 2nd Class Waris Banks

Dec. 2, 2011: A U.S. Air Force Fighting Falcon fighter aircraft pitches out while popping flares over Iraq. -- Source: U.S. Air Force / Master Sgt. Cecilio Ricardo

Dec. 7, 2011: A CH-53E Super Stallion prepares to land on the USNS Arctic during a simulated Expanded, Visit, Board, Search and Seizure. The 24th MEU is currently taking part in Composite Training Unit Exercise (COMPTUEX). -- Source: U.S. Marine Corps / Lance Cpl. Michael Petersheim

Dec. 11, 2011: A landing craft air cushion departs the well deck of the amphibious transport dock ship USS New Orleans (LPD 18). -- Source: U.S. Navy / Mass Communication Specialist 2nd Class Dominique Pineiro

Dec. 10, 2011: An F/A-18F Super Hornet assigned to Strike Fighter Squadron (VFA) 22 launches from the flight deck of the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson and Carrier Air Wing (CVW) 17 are underway on a western Pacific deployment. -- Source: U.S. Navy / Mass Communication Specialist Seaman Apprentice Dean M. Cates

Dec. 2, 2011: A U.S. Air Force C-17A Globemaster III cargo aircraft performs evasive counter measures by launching flares during a Mobility Air Forces Exercise over the Nevada Test and Training Range. The U.S. Air Force Weapons School holds MAFEX twice a year to test the ability of aircrews from bases around the world. -- Source: U.S. Air Force / Senior Airman Brett Clashman

Dec. 10, 2011: Members of the U.S. Army Parachute Team, Sgt. 1st Class John Berentis, from Yuma, Ariz. and Staff Sgt. Laura Dickmeyer, from Abilene, Texas, assess the wind conditions prior to their pre-game jump into FedEx field for the Army vs. Navy college football game. -- Source: U.S. Navy / Mass Communication Specialist 2nd Class Clifford L. H. Davis

Dec. 2, 2011: A U.S. Air Force F-16 Fighting Falcon fighter aircraft is refueled by a KC-135 Stratotanker over Iraq. Stratotankers with the 340th Expeditionary Air Refueling Squadron provide approximately 200,000 pounds of fuel each day to aerial assets in Iraq. -- Source: U.S. Air Force / Master Sgt. Cecilio Ricardo

Dec. 5, 2011: U.S. Air Force service members from the 161st Security Forces Squadron participate in weapons qualification training at the National Guard training range in Florence, Ariz. Beginning Dec. 1, all Airmen are required to qualify in a new rifle course. Security forces must undergo night firing qualification. -- Source: U.S. Air Force / Tech. Sgt. Susan Gladstein

Dec. 2, 2011: U.S. Air Force F-16 Fighting Falcon fighter aircraft from both the 8th and 419th Fighter Wings demonstrate an "elephant walk" formation as they taxi down a runway during an exercise at Kunsan Air Base, South Korea. -- Source: U.S. Air Force / Staff Sgt. Rasheen Douglas

Dec. 1, 2011: Illuminated by his armored vehicle's green combat lights, Spc. Tom Tienda, a military policeman assigned to Headquarters Co., 2nd Brigade Special Troops Battalion, 82nd Airborne Division, tests the truck's communications system before leaving Camp Taji, Iraq. -- Source: U.S. Army / Sgt. Kissta M. Feldner

Nov. 12, 2011: Members of the United States Air Force Air Demonstration Squadron Thunderbirds execute opposing solos while demonstrating the calypso pass maneuver, during the 2011 Aviation Nation Nellis Open House at Nellis Air Force Base, Nev. The Nellis Open House is an opportunity for the Las Vegas community to view aerial demonstrations and static displays of various military aircraft. -- Source: U.S. Air Force / Senior Master Sgt. Kevin Gruenwald

Nov. 12, 2011: A U.S. Air Force A-10 Thunderbolt II close air support aircraft simulates its air to ground capabilities during the 2011 Aviation Nation Open House on Nellis Air Force Base, Nev. Aviation Nation celebrates 70 years of airpower in Las Vegas and the Air Force's accomplishments in air, space and cyberspace. -- Source: U.S. Air Force / Tech. Sgt. Bob Sommer

Nov. 22, 2011: The Virginia-class submarine USS Texas (SSN 775) is moored at Fleet Activities Yokosuka as part of its deployment to the Western Pacific Region. -- Source: U.S. Navy / Mass Communications Specialist 1st Class David Mercil

Nov. 18, 2011: A Marine assigned to the Marine Corps Training Division at Expeditionary Warfare Training Group Pacific jumps from a CH-46 Sea Knight helicopter, assigned to the "Knightriders" of Marine Medium Helicopter Training Squadron (HMMT) 164 during a training exercise. The exercise was the conclusion of the Infantry Company Small Boat Raid Course. -- Source: U.S. Navy / Mass Communication Specialist Seaman Tim Godbee

Nov. 21, 2011: Two SA-330J Puma from Military Sealift Command (MSC) take turns transferring munitions from the flight deck of the nuclear-powered aircraft carrier USS George Washington (CVN 73) during a vertical replenishment with MSC's dry cargo and ammunition ship USNS Amelia Earhart (T-AKE 6).

George Washington pulled out of her forward-operating port of Yokosuka, Japan Sept. 19 to continue her 2011 patrol. As the Navy's only full-time forward deployed carrier, George Washington's mission is to help ensure security and stability in the western Pacific Ocean. -- Source: U.S. Navy / Mass Communication Specialist 3rd Class David A. Cox

Nov. 20, 2011: The forward-deployed amphibious assault ship USS Essex (LHD 2) leads a formation of U.S. and Indonesian navy ships during a pass and review. -- Source: U.S. Navy / Mass Communication Specialist 1st Class Mark R. Alvarez

Nov. 11, 2011: An F/A-18+ Hornet assigned to Strike Fighter Squadron (VFA) 87 releases flares while flying the missing man formation in remembrance of Capt. Tushar Tembe, commanding officer of USS Harry S. Truman (CVN 75).

Tembe died Nov. 8 and previously served as commanding officer of VFA-87. VFA-87 is part of the George H.W. Bush Carrier Strike Group deployed to the U.S. 5th Fleet area of responsibility on its first operational deployment conducting maritime security operations and support missions as part of Operations Enduring Freedom and New Dawn. -- Source: U.S. Navy / Mass Communication Specialist 3rd Class Billy Ho

Nov. 2, 2011: U.S. Army Capt. Tim Beecher with the 82nd Combat Aviation Brigade, Task Force Talon, mans his weapon on the door of a UH-60 Black Hawk as it and another Black Hawk fly near the Tora Bora area along the Pakistan border. -- Source: U.S. Army

Nov. 2, 2011: A formation of C-130 Hercules cargo aircraft fly together as they are flown back to Yokota Air Base, Japan, from a training mission near Mount Fuji. Aircrew members from the 36th Airlift Squadron participated in Samurai Surge, an all-day training exercise testing mission capability of many agencies throughout Yokota. -- Source: U.S. Air Force / Capt. Raymond Geoffroy

Oct. 15, 2011: A variant of the Joint Strike Fighter F-35B Lighting II maneuvers after a vertical landing as the other variant approaches the flight deck for landing on the amphibious assault ship USS Wasp (LHD 1) on day thirteen of sea trials. -- Source: U.S. Navy Photo By Mass Communication Specialist First Class Tommy Lamkin

Oct. 23, 2011: An F/A-18F Super Hornet assigned to the Black Aces of Strike Fighter Squadron (VFA) 41 prepares to launch from the Nimitz-class aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is deployed to the U.S. 5th Fleet area of responsibility conducting maritime security operations and support missions as part of Operation Enduring Freedom and New Dawn. -- Source: U.S. Navy photo by Mass Communication Specialist 3rd Class Benjamin Crossley

Oct. 20, 2011: Airman Andrew Grooters from Grand Rapids, Mich., stands by as Gunner's Mate Seaman Apprentice Anthony Byers from Oroville, Calif., fires a shot line from the aircraft carrier USS George Washington (CVN 73) to the Military Sealift Command fleet replenishment oiler USNS Walter S. Diehl (T-AO 193) during a replenishment at sea. George Washington is conducting a patrol in the western Pacific region. -- Source: U.S. Navy photo by Mass Communication Specialist Seaman Alysia Hernandez

Oct. 20, 2011: Members of the decontamination team at Naval Medical Center San Diego carry a simulated casualty into the wash station during a chemical attack training event. Decontamination training ensures readiness in response to a chemical, biological and radiological attack. -- Source: U.S. Navy photo by Mass Communication Specialist Seaman Clay M. Whaley

Oct. 19, 2011: Sonar Technician Seaman Eugene Roberts, right, and Chief Sonar Technician Steven Kincade watch as Sonar Technician Seaman Darian Johnson fires an air slug from a MK-32 surface vessel torpedo tube aboard the guided-missile destroyer USS Mitscher (DDG 57). Mitscher is deployed to the U.S. 5th Fleet area of responsibility conducting maritime security operations and support missions. -- Source: U.S. Navy photo by Mass Communication Specialist 3rd Class Deven B. King

Oct. 24, 2011: Pfc. Christian Carter, a forward observer with Headquarters and Headquarters Co., 1st Heavy Brigade Combat Team, and a native of Portland, Oregon, looks through the Lightweight Laser Designating Rangefinder during the brigade's forward observer qualification Oct. 14. The qualification marked the climax of a three-month long push to strengthen their job-specific skills to maintain proficiency in the Soldiers assigned specialty. -- Source: U.S. Army photo by Spc. Emily Knitter

Oct. 11, 2011: A Soldier from the 173rd Airborne Brigade Combat Team runs through STX lanes during the Full Specturm Training Event being held at Hohenfels Germany. -- Source: US Army Europe Public Affairs photo by Richard Bumgardner

Oct. 16, 2011: Two U.S. Air Force HH-60 Pave Hawk rescue and recovery helicopters from the 66th Rescue Squadron on Nellis Air Force Base, Nev., maneuver behind an HC-130 King refueler aircraft to perform a helicopter air refueling during Angel Thunder 2011 at Davis-Monthan Air Force Base, Ariz., Oct. 16, 2011. Angel Thunder is an Air Combat Command-sponsored personnel recovery/combat-search-and-rescue exercise that combines Department of Defense and non-DoD assets. -- Source: U.S. Air Force photo by Staff Sgt. Andy M. Kin

Sept. 29, 2011: Marines with Charlie Battery, 1st Battalion, 12th Marine Regiment, fire an M982 Excalibur round from an M777 howitzer during a recent fire support mission. The artillerymen spend hours each day running through dry-fire training drills to keep their skills sharp in preparation for requests for fire support. -- Source: U.S. Marnie Corps

Sept. 23, 2011: A U.S. Air Force A-10 Thunderbolt II ground attack aircraft with the U.S. Air Force Weapons School drops an AGM-65 Maverick missile during a close air support training mission over the Nevada Test and Training Range (NTTR). U.S. Air Force Weapons School students participate in many combat training missions over the NTTR during the six-month, graduate-level instructor course held at Nellis Air Force Base. -- Source: U.S. Air Force photo by Senior Airman Brett Clashman

Sept. 21, 2011: A U.S. Air Force F-22 Raptor fighter aircraft takes off at Joint Base Pearl Harbor-Hickam, Hawaii, after a four-month, Air Force-wide stand down. The commander of Air Combat Command directed a stand down of the fleet May 3, 2011, as a safety precaution, following 12 separate reported incidents where pilots experienced hypoxia-like symptoms. -- Source: U.S. Air Force photo by Staff Sgt. Lee O. Tucker

Sept. 22, 2011: Bryan Jones, a dimensional metrology technician at Naval Surface Warfare Center (NSWC), Corona Division, calibrates a boresight collimator for an MH-60 Sea Hawk helicopter. The boresight collimator keeps ordnance on target by assuring both the visual and laser paths of the targeting turret are absolutely parallel. -- Source: U.S. Navy photo by Greg Vojtko

Oct. 7, 2011: Aircraft, vehicles and helicopters rest on the flight deck of the USS Bonhomme Richard, LHD, Oct. 7, San Francisco. During San Francisco Fleet Week 2011, people can tour the ship and the military aircraft and vehicles. The annual event gives Marines and sailors aboard USS Bonhomme Richard a chance to demonstrate assets, capabilities and the Corps amphibious nature, readiness and ability to respond to disasters, should the secretary of defense direct. -- Source: Sgt. Jimmy D. Shea/U.S. Marines

Oct. 3, 2011: An F-35B Lightning II makes the first vertical landing on a flight deck at sea aboard the amphibious assault ship USS Wasp (LHD 1). The F-35B is the Marine Corps Joint Strike Force variant of the Joint Strike Fighter and is designed for short takeoff and vertical landing on Navy amphibious ships. -- Source: U.S. Navy photo by Mass Communication Seaman Natasha R. Chalk

Sept. 5, 2011: The Ohio-class guided-missile submarine USS Georgia (SSGN 729) prepares to moor outboard of the submarine tender USS Emory S. Land (AS 39) in Diego Garcia. Georgia is homeported in Kings Bay, Ga., and will undergo a continuous maintenance availability and crew exchange while in Emory S. Land's homeport of Diego Garcia. -- Source: U.S. Navy photo by Mass Communication Specialist 2nd Class Chris Williamson

Sept. 21, 2011: Members of Helicopter Sea Combat Squadron (HSC) 7 perform a night search and rescue jump for qualification at Naval Station Norfolk. -- Source: U.S. Navy photo by Mass Communication Specialist 1st Class Christopher B. Stoltz

Sept. 23, 2011: Lt. Cmdr. Matthew N. Delgado stands watch as tactical action officer in the combat direction center aboard the aircraft carrier USS George H.W. Bush (CVN 77). George H.W. Bush is deployed to the U.S. 5th Fleet area of responsibility on its first operational deployment conducting maritime security operations and support missions as part of Operations Enduring Freedom and New Dawn. -- Source: U.S. Navy photo by Mass Communication Specialist 2nd Class Jeffrey Richardson

Sept. 19, 2011: A T-45C Goshawk training aircraft makes an arrested landing aboard the aircraft carrier USS Dwight D. Eisenhower (CVN 69). Dwight D. Eisenhower is underway training and preparing naval aviators for future carrier-based operations. -- Source: U.S. Navy photo by Mass Communication Specialist 3rd Class Nathan Parde

Sept. 23, 2011: A U.S. Air Force A-10 Thunderbolt II ground attack aircraft with the U.S. Air Force Weapons School drops an AGM-65 Maverick missile during a close air support training mission over the Nevada Test and Training Range (NTTR). U.S. Air Force Weapons School students participate in many combat training missions over the NTTR during the six-month, graduate-level instructor course held at Nellis Air Force Base. -- Source: U.S. Army photo by Sgt. Roland Hale, 1st Inf. Div. Public Affairs

Aug. 25, 2011: U.S. Air Force Maj. Aaron Jelinek demonstrates the turning performance of a U.S. Air Force F-16 Fighting Falcon fighter aircraft at Pease Air National Guard Base, N.H., during the Boston-Portsmouth Air Show. Jelinek is the lead solo pilot for the U.S. Air Force Thunderbirds. -- Source: U.S. Air Force/Staff Sgt. Larry Reid Jr.

Sept. 3, 2011: Pfc. Erik Park, 3rd Platoon, Alpha Battery, 1st Battalion, 77th Field Artillery Regiment, 172nd Infantry Brigade, fires his M-777 155mm howitzer. -- Source: U.S. Army

Aug. 24, 2011: A T-45C Goshawk training aircraft assigned to the Salty Dogs of Air Test and Evaluation Squadron (VX) 23 conducts a test flight using a biofuel blend of JP-5 jet fuel and plant-based camelina. -- Source: U.S. Navy/Kelly Schindler