The gentleman I rent hangar space from was an eye witness to the
incident & first one to the R-22. He said the R-22 pilot was cut up
pretty bad & appeared to have broken both legs. He was in a lot of
pain. The R-44 appeared to lose its MR blades & tail boom in the mid
air. It went straight down middle of the runway in front of the tower.
Very messy. I'll leave it at that.

Did he have any thoughts as to how the two managed to get that close
to each other in front of the tower?