31st Marine Expeditionary Unit (31st MEU)

Marines assigned to the 31st Marine Expeditionary Unit (31st MEU) embarked aboard the amphibious assault ship USS Essex (LHD 2) board a CH-53E Sea Stallion helicopter during a Talisman Saber 2009 exercise.

This photo is public domain.

AV/8-B Harrier

An AV/8-B Harrier assigned to the Sea Elks of takes off from the amphibious transport dock ship USS Cleveland (LPD 7).

This US Navy photo is public domain.

U.S. Marine MV-22 Osprey

A U.S. Marine MV-22 Osprey attached to Marine Medium Tiltrotor Squadron 261 (VMM-261) takes-off after unloading Marines.

Washington Redskins cheerleaders

Six Washington Redskins cheerleaders perform for Sailors, family and friends aboard the aircraft carrier USS Harry S. Truman (CVN 75).

This US Navy photo is public domain.

Space shuttle Endeavour

Space shuttle Endeavour's climb toward space from NASA Kennedy Space Center's Launch Pad 39A is captured in the nearby pond. The launch vibrations ripple the water.

This NASA photo is public domain.

MH-60S Sea Hawk helicopter

An MH-60S Sea Hawk helicopter from Helicopter Sea Combat Squadron (HSC) 22 takes off from the amphibious assault ship USS Bataan (LHD 5).

This US Navy photo is public domain.

Thomas Jefferson Building

This image is public domain.

French Dassault Rafale fighter aircraft

A French Dassault Rafale fighter aircraft conducts touch and go landings aboard the aircraft carrier USS Dwight D. Eisenhower (CVN 69) during a coalition training exercise.

This photo is public domain.

Apollo 11 Crew Meets With President Obama

President Barack Obama chats with Apollo 11 astronauts, from left, Buzz Aldrin, Michael Collins and Neil Armstrong, Monday, July 20, 2009, in the Oval Office of the White House in Washington, on the 40th anniversary of the Apollo 11 lunar landing.

This photo is public domain.

Cavalry Officer, 1911

DEAN, WARREN. CAPTAIN, 15TH CAVALRY, U.S.A., 1911.

This photo is public domain.

Endeavour Closes In

Endeavour photographed as it performs a backflip, officially known as the Rendezvous Pitch Maneuver, shortly before docking with the International Space Station on Friday, July 17, 2009.

The backflip allows astronauts on the station to photograph the orbiter's underside, one of several procedures designed to inspect the shuttle's heat shield.

This NASA image is public domain.

AV-8B Harrier

An AV-8B Harrier aircraft assigned to Marine Attack Squadron (VMA) 211 embarked aboard the forward-deployed amphibious assault ship USS Essex (LHD 2), lands aboard Essex during a mock amphibious assault as part of exercise Talisman Saber 2009.

This US Navy photo is public domain.

Navy Rugby

Sailors from rugby team of the aircraft carrier USS George Washington (CVN 73) play against the Palmyra Rugby Union during a port visit to Perth and Fremantle, Australia.

This photo is public domain.

GOES-O

CAPE CANAVERAL, Fla. – Rising above the pad's fixed service tower, a Delta IV rocket soars into the sky with the GOES-O satellite aboard. Liftoff was at 6:51 p.m. EDT from Launch Complex 37 at Cape Canaveral Air Force Station in Florida. The first attempt to launch GOES-O, on June 26, was scrubbed due to thunderstorms in the vicinity of Cape Canaveral. The latest Geostationary Operational Environmental Satellite, GOES-O was developed by NASA for the National Oceanic and Atmospheric Administration, or NOAA. Each of the GOES satellites continuously provides observations of 60 percent of the Earth including the continental United States, providing weather monitoring and forecast operations as well as a continuous and reliable stream of environmental information and severe weather warnings. Once in orbit, GOES-O will be designated GOES-14, and NASA will provide on-orbit checkout and then transfer operational responsibility to NOAA. Photo credit: NASA/Tom Farrar, Sandy Joseph

This photo is public domain.

Francis Bacon

Francis Bacon.

This image is public domain.

Gettysburg, PA

Gettysburg, PA.

This photo is public domain.

Japanese Art

Print shows a musician playing the koto, while a warrior sneaks up behind the musician, drawing his sword from its scabbard.

This image is public domain.