 Military Sea Lift Command, or MSC, operates approximately 110 ships daily around the globe in support of the U.S. Navy. One of these ships is the fleet replenishment oiler USNS Leroy Grumman. Hugo Polanco, the ship's chief mate, tells us what the Grumman is responsible for. Typically on this ship we provide mainly fuel, but we also have stores and parts, food stuff. There's a whole assortment of different support. It's really a support ship for the Navy. Performing an underway replenishment, or UNREP, is just another day at the office for the Civil Service Mariners of MSC. But some days at the office are harder than others. Robert Melendez, one of the five Boson mates aboard Grumman, explains what he finds most challenging about performing UNREPs. Most challenging for me is nights. We understand that they have to be done because you just don't UNREP all the time during the day, and you don't just UNREP in calm seas, you know what I mean? Now that we're getting into the winter, winter tends to be a little rough. Whatever obstacles may arise, Melendez understands the importance of the job and knows the rewards are worth the work. As a former U.S. Navy sailor, he remembers the feeling of receiving mail while deployed and recalls the last time he helped deliver mail to the USS Cole. We had received so much mail for them, and they had to go aft and disperse it out to everybody, but after we broke away, they broke away from us. Everybody back there with all their mail in their hands, they were still waving at us and thanking us. I mean, you could just see they had like big grins on their faces, and they were thankful for that mail. You know, and I've been in their shoes, I know exactly how that feels. From the U.S.NS, Leroy Grumman, I'm Petty Officer Donovan Patubo.