U.S. Coast Guard Petty Officer 2nd Class Vincent Tang teaches Petty Officer 3rd Class Vickie Kwong how to safely handle and operate an unloaded M4 rifle during Port Security Unit 312’s deployment to Port Hueneme, California, in support of the Department of Defense-led Pacific Blitz 2019 exercise, March 4, 2019. Understanding how the rifle operates and how to quickly overcome any issues the operator may encounter when firing the weapon are essential elements to safely handling the gun. U.S. Coast Guard photo by Petty Officer 1st Class Matthew S. Masaschi