USA 129 brightly flared to mag. -1 at 20:34:11.1 UTC (Sep 1st). The camera was open when it did:
The series of images of the USA 144 Decoy yielded information again about the periodicity of it's brightness (indicating the tumbling period). Like the data of August 25 and 27, it fits a sinusoid with a period of 71 second.