Magnesium Float U.S. Navy Petty Officer 3rd Class Mallory Getty uses a magnesium float to smooth concrete during a construction placement project on Naval Base Guam, Guam, Oct. 20, 2015. Getty is a builder assigned to Naval Mobile Construction Battalion 1. U.S. Navy photo by Petty Officer 1st Class Ace Rheaume SHARE: Download: Full Size (1.51 MB) Tags: Naval Mobile Construction Battalion 1, U.S. Navy, Photo Essays, Naval Base Guam, Concrete, Ace Rheaume, GUAM, All images Credit: Petty Officer 1st Class Ace Rheaume VIRIN: 151020-N-SI773-223.JPG Photo Gallery