Corporals Brandon S. Mettlen, left, and James J. McNeely, Chemical, Biological, Radiological and Nuclear defense specialists with the 22nd Marine Expeditionary Unit, construct wooden braces, or shores, to secure a compromised structure during a technical rescue certification exercise, Feb. 5, 2011. Chemical, Biological, Radiological, and Nuclear defense Marines with the 22nd Marine MEU participated in specialized classes on technical rescue during a two-week training evolution aboard the Center for National Response, in Gallagher, W.V. The Marines and sailors of the 22nd MEU are in the early stages of their pre-deployment training program, which is a series of progressively complex exercises designed to train and test the MEU's ability to operate as a cohesive and effective fighting force.