LOS ANGELES (Reuters) - The waiting might have been the hardest part, but rockers Tom Petty and the Heartbreakers have gotten back the missing guitars they were seeking and police said on Tuesday a security guard has been arrested on suspicion of stealing the instruments. The five guitars - which included Petty's 1967, 12-string Rickenbacker made of maple - were reported stolen on Thursday from a sound studio in Culver City, west of Los Angeles, and the band announced it would pay a $7,500 reward for information leading to their recovery. ...