English: McMurdo Station, Antarctica (Feb. 4, 2007) — Sailors assigned to Navy Cargo Handling Battalion One (NCHB-1) conduct cargo handling operations off the Military Sealift Command ice strengthen container ship MV American Tern (T-AK-4729) for the annual resupply mission for Operation Deep Freeze at McMurdo Station, Antarctica, Feb. 4–12. For more than 50 years the National Science Foundation has relied on the highly skilled Navy Cargo Handlers to ensure safe delivery of life-sustaining cargo for its research scientists and residents at McMurdo Station. Around the clock, in two 12-hours shifts, the sailors offload and load a cargo ship in Antarctica during the summer month of February, which provides continuous sunlight on the continent.