Crockett's hard exterior stems in part from the type of work he performs and also from rough experiences from his past, losing friends, partners, and other people he has been close to or otherwise deeply cared about. From time to time, these memories haunt him and he struggles with feelings of guilt and because of difficult decisions he has had to make. He is very close with his friends and colleagues, Switek, Zito, Gina and Trudy, as well as with his supervisor, MDPD Lieutenant Martin Castillo, and especially with his partner, Ricardo Tubbs. Crockett is depicted as a rogue character who lives by his own set of rules and he is often angered by and in conflict with orders from his superiors. This part of his persona is emphasized by the fact that he lives on a sailing yacht moored in Miami's luxurious Miamarina and keeps an alligator as a pet on the same boat, and drives a Ferrari - first a black Daytona Spyder, and after it's destroyed by a Stinger missile, a white Testarossa. The character first used a SIG Sauer P220 as his main firearm in the pilot episode, but this was replaced by the Dornaus & Dixon's Bren Ten. After Dornaus & Dixon went out of business, since the producers would not use discontinued guns, he would switch to Smith & Wesson Model 645 in Season 3, and in Season 5, to its successor, Model 4506.