Maybe this is my game, When you request Squad 28. It gets stuck in the station. A lot of times ladder 66 and 68 get stuck turning out of the station and never show up to calls. Also randomly trucks deviate from road and end up crashed in to a building. Engine 49 likes to fly, and ends up 54 stories in mid air suspended as its "home".
AI hasnt been really tweaked for Multiplayer yet but we will look into this