Thats right I should have been more specific. The inner slats deploy up and forward increasing the slot dimension between the slat and the wing. The outer slats pivot changing their AOA.
The net effect is the F-4's stall performance is improved so as Sluggo said it could turn around and see who is shooting at it... Thats funny but wouldnt it be shot down long before it had to turn because of the black smoke trails? []

Heres a good info link...

http://aviation.watergeek.eu/f4-phantom.html