NAVAL STATION ROTA, Spain (Sept. 10, 2015) Builder Constructionman Alexis Greene, assigned to Naval Mobile Construction Battalion (NMCB) 1, uses a mechanical vibrator during a concrete placement of a four-foot roof wall on Naval Station Rota, Spain, Sept. 10, 2015.
The concrete placement was for a shipboard electronic systems evaluation facilities project that will to provide test and evaluation services to U.S. Navy, U.S. Coast Guard and Military Sealift Command activities as well as allied foreign navies. Original public domain image from Flickr