0:00 - Video starts few minutes before WTC-2 (South Tower) was hit. It's apparent by the denser smoke plume and progressed stage of the fire at south face of WTC-1 (North Tower).
1:39 - Noise most likely coming from the NYPD Aviation Unit #14 flying overhead, with officers Tim Hayes, Patrick Walsh, John Maier, and Donald Gromling on board. That police helicopter along the nearing UA175 has been captured on photo by Kathy Cacicedo ( https://bit.ly/3Qx2rdN ).
1:59 - Engine roar of UA175 becomes audible.
2:03 - The approaching aircraft finally caught on camera.
2:09 - UA175 crashes into WTC-2 at 9:02:59AM.
2:12 - Sound from the jet-fuel explosion reaches Westley's camcorder mic.
Videographer: Kevin Westley
View toward WTC from: South
Camera Location: Staten Island ferry boat (same as of Michael Hezarkhani).
Original video uploaded by Kevin Westley on to YouTube in the 2000s (!) and made public on February 23, 2022: