On the way to the junk yard ladder truck # should be E276 but the door # is 81.
When the junkyard call comes in, the announcement is for Truck 81 and Squad 3, but not for Ambulance 61. Despite this, Brett and Mills immediately start going to their ambulance at the alarm even though they technically haven't been called.
At the sweat shop fire, Brett starts doing CPR on the burn victim without checking for a pulse first.