Sometimes being in the right place at the right time has its benefits. The Fullerton Police Department’s Gang Unit continues to take dangerous gang members off the streets by doing just that as often as possible. An example of this occurred at 11:30 p.m. in early September. The unit arrested three documented gang members from Fullerton on suspicion of assaulting and robbing a man who they believed to be part of a rival gang. Detectives were traveling west in two unmarked cars on Valencia Drive towards Highland Avenue when they spotted two groups of young men running in two different directions…