As captain, he had a lax attitude that was appreciated by Jake. While Jake liked Captain McGintley because it meant he could do what he want, Amy took an opposing view, stating that he was a terrible captain.
Jake said 'McGintley would literally let you do anything you wanted if you gave him a hamburger' '... He was always an hour late... and hung over'.
He was willing to let the Nine-Nine do whatever they wanted and was often oblivious to what they were doing. In the pilot it's shown that the nine nine were doing a 'fire extinguisher roller chair derby'. After asking 'what the hell is going on in here', McGintley calmly says 'okay' and returns to his office.
In "99," it is revealed that he has passed away and the squad attends his funeral in Los Angeles, CA.