You probably know this one! Smoking poses the biggest fire risk while pumping gas. One loose ember can ignite gasoline vapors in the air, setting anything nearby, including you and your car, on fire.

New images show the B-21 Raider stealth bomber refueling mid-air from a KC-135 tanker during a test flight over California’s ...

While the U.S. Air Force's B-21 Raider isn't even technically in service yet, it has just been spotted performing a difficult maneuver for the first time.