Sailors use an oxygen mask, regulator, helmet and communication test set during 30-day flight equipment checks.

SAN DIEGO (Aug. 23, 2012) Aircrew Survival Equipmentman 2nd Class Scharlanea Cleveland, right, and Aircrew Survival Equipmentman 2nd Class Alex Gardner, both stationed at Fleet Readiness Center Southwest, use an oxygen mask, regulator, helmet and communication test set during 30-day flight equipment checks. (U.S. Navy photo by Mass Communication Specialist 2nd Class Trevor Welsh) File# 120823-N-ZS026-031