PF- What's going on in Montana?

First, at 7:23 PM UTC

Call sign: POSIDN1

Reg: 169562Type: P-8A Poseidon

Arrives at Glacier Park International Airport after making a stop in the Reno area (origin: Seattle area.)

Then at 8:55 PM UTC:

Call sign: R60108

Reg: 96-00108

Type: Cessna UC-35A Citation

Lands at the same airport (but with origin of Los Angeles.)

((Update) Cessna has left Glacier Park- now headed south. )

Anon's speculation: Did something/someone get picked up by POSIDN1 in Reno, transported to Montana, and is now with R60108?

>>11973094

Update: R60108 now headed south.

Anon postulates: Did POSIDN1 pick up something/someone from Reno, drop off in Montana, then was retrieved by R60108?

Don't understand why a Poseidon- which is for sub recon/maritime recon would be making a route like this.