It's a helicopter. You can see the anti-collision strobes at the rear of the fuselage.
This video is a good example of something else also. It illustrates why eyewitness accounts in aviation accidents are erroneous "more than 90%" of the time. The helo looks like it's headed straight down, but it's not. It's actually in level flight slightly descending. I spoke with an NTSB investigator a while back and he was telling me the minute an eyewitness starts describing anything about direction or angle they will still document it, but it rarely weighs heavily in their investigation findings (because of exactly the above). They are far more interested in things like reports of smoke and/or sounds. Things like orientation in flight, direction and velocity they primarily rely on black box (FDR) (if applicable) and/or radar data.
This video is a good example of something else also. It illustrates why eyewitness accounts in aviation accidents are erroneous "more than 90%" of the time. The helo looks like it's headed straight down, but it's not. It's actually in level flight slightly descending. I spoke with an NTSB investigator a while back and he was telling me the minute an eyewitness starts describing anything about direction or angle they will still document it, but it rarely weighs heavily in their investigation findings (because of exactly the above). They are far more interested in things like reports of smoke and/or sounds. Things like orientation in flight, direction and velocity they primarily rely on black box (FDR) (if applicable) and/or radar data.