Petty Officer 1st Class Christopher Juelsgaard, assigned to Mobile Diving and Salvage Unit 2, deployed with Combined Task Group 56.1 conducts in-water safety checks on his MK 16 Mod 1 Underwater Breathing Apparatus during a training dive. CTG 56.1 is deployed supporting maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility.