Instability in Egypt, where a newly-elected Islamic government teeters over an angry population, isn´t enough to stop the U.S. from sending more than 20 F-16 fighter jets, as part of a $1 billion foreign aid package. The first four jets are to be delivered to Egypt beginning Jan. 22, a source at the naval air base in Fort Worth, where the planes have been undergoing testing, told FoxNews.com. The North African nation already has a fleet of more than 200 of the planes and the latest shipment merely fulfills an order placed two years ago.