The US is just reminding Pakistan who controls Pakistani airspace. The U.S. seems to care not a whit that actions such as this create more anti-Americanism within Pakistan. This is from thenews.
US jets violate Pak airspace again
Sunday, September 28, 2008By our correspondentPESHAWAR: Two US jetfighters Saturday night again intruded into Pakistan airspace over South Waziristan area, causing panic among the tribesman. However, neither the security forces nor the tribesmen fired upon the fighter planes. Sources in the tribal agency confirmed to The News that two US jetfighters for about 25 minutes hovered over Angoor Adda, Baghar and Momin Tangi area of the agency. The planes that came across the border from troubled Paktika province of Afghanistan, after the flight over the area went back without any action.