Rose pinkish orbs in Tempe, Arizona.

I have a view to flight path of Sky Harbor airport and often watch incoming planes from my upper deck.  On this day, I noticed a rose/pink colored orb in the area where planes are normally in a holding pattern.  I watched it head south in my direction, then made an ubrupt turn to east (opposite direction from airport) and watched until it disappeared.  I then looked back to where I originally saw this, and saw two more coming!  
I ran downstairs to get binoculars and by the time I got back upstairs, those two orbs went into same pattern/direction as the previous one.  Then, again, two more come into view - from the same direction and eventually disappeared into the eastern sky.  I did manage to get a picture.  I didn't know what to make of it, but what I find most interesting that no planes landed or were in holding during this time.  Once the orbs were gone, planes were again in view and started landing.  Very strange.