180314-M-BG123-0031 – Sgt. Rajinder Walia, a technical

180314-M-BG123-0031 – Sgt. Rajinder Walia, a technical rescue Marine with Technical Rescue Platoon, Reaction Force Company, Chemical Biological Incident Response Force, finishes nailing the last piece of a sheer holding up an unstable structure in a simulated collapsed tunnel during Exercise Scarlet Response 2018 at Guardian Centers, Perry, Ga., on March 14, 2018. Exercise Scarlet Response is a scenario-based training evolution that allows Reaction Force Company and Headquarters and Service Company Marines and Sailors to cross-train in all of CBIRF’s capabilities during two days of lane training and a 12-hour continuous operation exercise and a final 72-hour certification exercise simulating a response to an earthquake in Chattanooga, Tenn. (Official U.S. Marine Corps photo by Pfc. Blakely Graham)