A flare illuminates a U.S. Navy Basic Underwater Demolition/SEAL (BUD/S) third phase trainee during a night shoot on San Clemente Island, Calif., Dec. 3, 2009.
The third phase of BUD/S training focuses on land warfare and includes pistol and rifle training, demolitions and tactical movement. (DoD photo by Mass Communication Specialist 3rd Class Blake Midnight, U.S. Navy). Original public domain image from Flickr