In the bar scene near the beginning of the film, the gunmen put a bomb on the bar. The clock on the bomb is showing 29:56 and beeping each second. Then we cut away from the bomb, bu we continue to hear the beeping for 20 seconds. when the bomb is shown again, the time shown is 29:49 even though more than 7 beeps were heard.
When the bomb techs are cutting the first wire in the stadium they keep mentioning it is connected to an SCR then later it is said it is the SRC.
When the tech is about to cut the first wire, there is a close up sequence just before he cuts it, very clearly in that shot the wire next to it is already cut.