 In the military, there are typically designated security forces to protect installations and other military assets. When it comes to some of military seal of command's supply ships, security is the responsibility of the civil service mariners. Hugo Polanco, chief-mate and anti-terrorism officer aboard the USNS Leroy Grumman, discusses why they run security drills. The security drill, these are all required drills that we're supposed to do per our 55-30, which is our kind of anti-terrorism instruction. The instruction calls for one drill every quarter. So in our kind of scheme of long-range training plan, that particular drill was the one I was scheduled for that quarter. The internal threat drill was a little unusual for the crew because most of the security drills are executed to repel external threats. Robert Melendez, boatsman made aboard the Grumman, talks about why this drill was important. It's something that has to get done. I mean, you never know when you'll end up having something serious like that. I mean, anything could happen on board a ship or you could have a disgruntled crew member so you just never know. I just, you know, hope something like that we could do a little bit more often, more often than not. Practice makes perfect, and when it comes to protecting the mail supplies and equipment the civil service mariners deliver to our service members, the crew of the Grumman, most of whom are former and retired service members, take it very seriously. Melendez expresses his opinion of the readiness of the crew when it comes to defending the ship and a real-life situation. I think everybody would be focused and I don't think we would have an issue. I'm sure we could defend this ship no problem. From the USNS, Lee Roy Grumman, I'm Petty Officer Ryan McClernan.