![](http://www.alamy.com/thumbs/6/96CFDECC-4384-4757-9063-45E8C9E8749B/2ADNF90.jpg)
Soldiers using a pneumatic drill to make a hole in the ground for a tent peg. A pneumatic drill uses compressed air to drive the drill bit.
Size: 2500px × 3733px
Photo credit: © US AIR FORCE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 2, adult, air, american, building, camp, campsite, caucasian, compressed, defenders, drill, drilling, duo, ear, equipment, erecting, exercise, goggles, hole, human, machine, male, man, men, pair, people, percussive, person, power, safety, soldier, soldiers, states, team, teamwork, technological, technology, tents, tool, united, white, working