Spotted a cylindrical shaped object speeding past the Starlink rocket booster on the way down yesterday:
https://www.youtube.com/clip/UgkxOl_hXYkSNrnTVGFsN87OrfCwFMN4CfzP
[https://www.youtube.com/clip/UgkxOl_hXYkSNrnTVGFsN87OrfCwFMN4CfzP]
Think I've seen it on other launches too, I wonder if it is some sort of landing guidance beacon perhaps.