Right now it is around 01:50, and the main plane which has been airborne is a C17 over Utah, with call sign RCH165.

Looking at Q Post 165: https://qalerts.app/?n=165

I've also seen, in order:

RCH1146 https://qalerts.app/?n=1146

RCH1466 https://qalerts.app/?n=1466

RCH220 https://qalerts.app/?n=220

RCH14 https://qalerts.app/?n=14

RCH662 https://qalerts.app/?n=662

Some of them make note of re-reading crumbs. I've probably missed some, as I look away to grab a Q post link or typing this. The planes come on for a bit, then go away.

Edit: Current time 0225 EST after planes being offline for a bit, 662, 165, 220 are back, with 147 joining them. RCH147 https://qalerts.app/?n=147