Petty Officer 3rd Class Chris Covas, floats the edges of a concrete slab with a mag trowel for the construction of a k-span near the Windjammer café, Feb. 2. Covas is attached to Naval Mobile Construction Battalion 28, Shreveport, La., which is deployed to Guantanamo Bay in support of general engineering, construction and project management for Naval Station Guantanamo Bay.