Simes
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Surname of a pilot on the Battlestar Galactica, third in seniority to Capt. Lee Adama and Lt. Kara Thrace. (Fragged)
Given that both his immediate superior, Lt. Thrace, and an inferior, Lt. Joe Palladino are lieutenants, he must share that rank.