As I mentioned here, I'm trying to get switched with a fellow coastie who is looking at a deployment.
After talking to 3 different commands, I'm pretty sure I can do this if the Port Security Unit will accept me despite my rate. They don't have any billets for a Marine Science Tech, but I've done similar work before. Besides, MSTs are trained in Port security anyway, it is one of our responsibilities.
Anyway my fingers are crossed.