Mark was flying around around the city with phone in hand, talking to Eve(His new girlfriend who has the ability of atomic manipulation in season 3) as he looks for crimes to fight against for the day.

Mark: “I know, Eve…Hey, I’ve been thinking…why not try to get our own apartment like we talked about a month ago?…Seems like the right time to actually move on with it, now that Oliver is taken care of with mom…”

He flies under a bridge, hearing the cars shake the metal supports from below as he flies over the water of the river.