This is a list of units that were on scene before 9:03 AM (2nd Plane Impact)
Engine 10 (8:49 AM, 3 Minutes After Impact, Parked On Liberty Street, Moved to West Street at 8:54 AM)
Ladder 10 (8:49 AM, 3 Minutes After Impact, Parked On West Street)
Battalion 1 (8:52 AM, 6 Minutes After Impact, Parked On West Street)
Ladder 1 (8:52 AM, 6 Minutes After Impact, Parked On West Street)
Engine 7 (8:52 AM, 6 Minutes After Impact Parked On West Street)
Ladder 8 (8:52 AM, 6 Minutes After Impact, Parked On West Street)
Battalion 2 (8:53 AM, 6 Minutes After Impact, Parked On West Street)
Squad 18 (8:53 AM, 7 Minutes After Impact, Parked On West Street)
Engine 55 (8:53 AM, 7 Minutes After Impact, Parked On West Street)
Ladder 6 (8:54 AM, 8 Minutes After Impact)
Ladder 3 (8:55 AM, 9 Minutes After Impact, Parked On West Street)
Engine 4 (8:55 AM, 9 Minutes After Impact, Parked On Vesey Street)
Squad 18 Support Unit (8:56 AM, 10 Minutes After Impact, Parked On West Street)
Engine 6 (8:56 AM,10 Minutes After Impact, Parked On West Street)
Battalion 6 (8:57 AM, 11 Minutes After Impact, Parked On West Street)
Engine 1 (8:57 AM, 11 Minutes After Impact, Parked On West Street)
Satellite 1 (8:58 AM, 12 Minutes After Impact, Parked On West Street)
High Rise Unit 1 (8:59 AM, 13 Minutes After Impact, Parked On West Street)
Division 1 (8:59 AM, 13 Minutes After Impact, Parked On West Street)
Ladder 20 (9:00 AM, 14 Minutes After Impact, Parked On West Street)
EMS LSU 1 (9:00 AM, 14 Minutes After Impact, Parked On West Street)
Rescue 1 (9:01 AM, 15 Minutes After Impact, Parked On West Street)
Engine 24 (9:02 AM, 16 Minutes After Impact, Parked On West Street)
High Rise Unit 2, 9:02 Am, 16 Minutes After Impact, Parked On West Street)
Below is a list of units that were on their way to the WTC but didn't arrive before the 2nd plane hit
TSU 1
HazMat 1
Rescue 2
Squad 1
Squad 1 Support Unit
TSU 2
Ladder 105
Field Comm 1
Engine 34
Engine 202
Engine 226
Ladder 11
MSU 4
MSU 2
Ladder 4
Engine 44
Engine 21
Engine 28