-8:46 a.m. and 9:02 a.m.
-Time towers stood: 56 minutes and 102 minutes.
-Time they took to fall: 12 seconds.
* Total number killed in attacks: 2,977
* Number of firefighters killed: 343
* Number of NYPD officers: 23
* Number of Port Authority police officers: 37
* Number of employees who died in Tower One: 1,402
* Number of employees who died in Tower Two: 614
* Number of employees lost at Cantor Fitzgerald: 658