San Francisco is one of those markets that shares a helicopter. When a fatal accident occurred just outside the San Jose International Airport, KGO's Sky 7 covered it from the air.
Apparently, the folks at KRON didn't want to go through the hassle of taking the raw feed, so put up ABC's video with competing logos. Unless, of course, using Channel 7's logo on Channel 4 is part of the 'viewer benefit' which would then lead us to question why someone at KRON would agree to that?
Here's the off-air video.