5:21 late presently to the right of the guy wearing the purple bandana is roundish red metal connected to darkened black glass, consistent with part of a Bell 407 helicopter.
https://m.youtube.com/watch?v=3PhC3UZLPxI
5:22 looks like the sign has a very large white frame and now one can see through the right part of the sign that doesn’t go all the way to the vertical part of the frame.
https://m.youtube.com/watch?v=3PhC3UZLPxI