Hi angle descent maneuvers

[pstan]

Anyone take a stab at what would be going on here, and why it
requires a notam?

Moses Lake/Grant county Washington

MWH 05/029 MWH AIRSPACE HI ANGLE DESCENT MANEUVERS 17999/BLW 20 NMR MWH AVOIDANCE ADZD WEF 1305171900-1305172100

 

[GauzeGuy]

AFD indicates a lot of activity by military heavies. They could be practicing steep approaches to avoid small arms fire in the vicinity of an airport.

 

[Tommy3]

AFD indicates a lot of activity by military heavies. They could be practicing steep approaches to avoid small arms fire in the vicinity of an airport.

Correctamundo