US Navy 071107-N-0775Y-002 Seabees assigned to Naval Mobile Construction Battalion (NMCB) 3 warm up with a set of jumping jacks before going on a two and a half mile march in full battle gear on board Port Hueneme
Autor: U.S. Navy photo by Mass Communication Specialist 1st Class Carmichael YepezŹródło: commons.wikimedia.org