The suspect who police believe gunned down two firefighters Sunday after starting a brush fire in Idaho wanted to pursue a career as a firefighter himself, his grandfather told CNN.

Wess Roley was living out of his vehicle and his former roommate, T.J. Franks Jr., said he shaved off his long hair and started to "kind of go downhill.” The two lived together for about six months in Sandpoint, Idaho, until Roley moved out in January, Franks said Monday.