Sorry I took so long to reply.
That was back in 05. I was stationed at MSO (marine safety office) Port Arthur TX. My job was strictly port security. The 870 is the riot police model, 14in barrel. I forgot the optic on it. It was a red dot sight. They said the sight cost more than the gun. I can find out exact info if you want me to. We did not have to know every detail about the guns, just how and when to use them. They do not let you keep you weapon, you have to check it out/in everyday.
That pack on my thigh that day was 20 extra rounds for the 870, 10rounds of 00 buck shot, and 10 slugs. Also had on my belt with hand cuffs, pepper spray, expandable baton, 2 extra mags of 9mm, Beretta 9mm. Spyderco Endura in my pocket.
I joined as a reservist in 99 out of high school. Got recalled to active duty 3 different times. Finished my contract in 07. Ask whatever questions you have, I will be happy to answer them.
I have been meaning to meet up with you at work, but I get there in time to clock in and jet at 525 to beat the traffic out of the back parking lot.