At about 33:00 in the bar scene, Dinah's necklace chain clasp and safety chain continuously switch from visible on her left shoulder to hidden behind her neck, while the pendant stays positioned slightly to the left of her neck the whole time,
When Frank fights Wolf, in the climatic moments, Frank survives because 'the gun was empty' and Wolf wasn't aware. However, Frank fired one round into Wolf's leg, and were the gun actually empty after that round, the slide would have locked back. This would have been immediately visible and apparent to any experienced law enforcement officer, as Wolf was. (Not every weapon locks open when empty, though.)
Micro doesn't have enough time to set up his beacon, call Frank in the diner, exit the first rooftop, cross the street then climb to the second rooftop.