I posted this LB. Apparently the tight circling at low speed (near stalling) is to get the Mercury E6 antenna array just right in order to communicate with our submarines.

We have the sub. Watch the water. Watch CA. …or then again maybe it's just training or doing routine stuff.

>>9272467

Some cool sauce of the plane, also known as "Looking Glass".

https://www.popularmechanics.com/military/weapons/a26230/deadliest-plane-e-6-mercury/

>>9272486