It’s a dirty job, but …
Senior Airman Sebero Quintero cleans an air filter with compressed air Oct. 28, 2010, at Kandahar Airfield, Afghanistan. Routine maintenance and servicing vehicles, such as cleaning air filters, can increase fuel efficiency. Airman Quintero, who is from Los Angles, is a vehicle maintenance journeyman with the 451st Expeditionary Logistics Squadron. (U.S. Air Force photo/Tech. Sgt. Chad Chisholm)