U.S. Air Force Drone — Gray, Aerial

1024 × 768

U.S. Air Force drone taking off

3062 × 2041

Unmanned Aerial Vehicle — Gray, Neutral

3872 × 2592

U.S. Air Force Cargo Plane — Gray, Dramatic, Night, Photograph

1920 × 1200

U.S. Air Force drone in flight

1920 × 1200

U.S. Air Force drone in flight

1920 × 1200

U.S. Air Force Drone — Gray, Serene, Afternoon

1800 × 1426

U.S. Air Force C-17 — Gray, Cold

3648 × 2736

Boeing YC-14 Aircraft

2924 × 2323

Military Transport Planes — Gray, Calm

2836 × 1779

Stealth Fighter Jet — Gray, Dramatic, Afternoon, Photograph

1800 × 1378

Air-to-air Refueling — Gray, Dramatic, Afternoon

1920 × 1200