Real Time: September 11 2001 | ATC for AA11, UA175, AA77 & UA93 (7:48am - 10:03am EDT)

Combination of Audio from the following:
ATC Recording for Flight 11: https://www.youtube.com/watch?v=Wlz1AzEnPdo
ATC Recording for Flight 175: https://www.youtube.com/watch?v=HT-Jv6G4llI
ATC Recording for Flight 77: https://www.youtube.com/watch?v=x2mrU6W07JE
ATC Recording for Flight 93: https://www.youtube.com/watch?v=6RcFS1FdTlw

Recorded on the 28th August 2021, with the following changes from last video:
- Updated audio to switch between AA11, UA175, AA77 & UA93 (depending on the most relevant events happening on each frequency).
- Added AA77 events (which were accidentally left out of the UA93 video).
- Removed some models to get rid of overlapping squares in Boston, Washington D.C. & South Carolina.