Tracking RQ-4 Global Hawk over Cali.

Southern part of the track appears to be ground mapping grid pattern.

At the western edge of the grid pattern there are several firefighting tankers and air-attack planes working a fire.

Air attack planes are aircraft that guide the water-bombers onto their targets.

The northern part of the RQ-4 track seems to be centered around a higher flying balloon.

RQ-4 & balloon tracks are predominately red and the fire fighters are much lower altitude showing a green track.