There is no need to worry. America knows how to fight conventional enemies and units. It knows how to get air superiority and prevent their enemies from getting it.<p>The US military and the intelligence community have mapped out the majority of air strips and storage locations for their jets. If there were ever a conflict America can shoot off cruise missles, use stealth fighters to bomb these targets with ease.<p>They also have the resources to disrupt the paki's entire war fighting capabilities, including its jets, by disrupting its network. With the navy they can block off all resources being sent in their country (like energy and metals),and bomb energy and communication assets with relative ease. Basically making their units useless.<p>All of what china gives pakistan is a gesture of good will for future economic gain.