The Joint Strike Fighter. This is what the United States military is working on. Similiar in appearance to the F-22, it fulfills many different roles, including air superiority, interception, and air-to-ground missions. It was concieved for use by both the United States Air Force and the United States Navy. This particular one is an Air Force variant. I'll leave it up to you to figure out how I know this, but once you know what to look for, it's quite obvious. And, no, it has nothing to do with any markings on the JSF itself.
A supersonic bomber with variable geometery wings, the B-1 is capable of low level, supersonic penetration into enemy territory. It boasts four turbine engines, and carries a payload that nearly rivals that of the B-52. It is capable of carrying both nuclear and conventional weapons.
The F/A-18 was originally known as the YF-17. The United States Air Force was looking for a low cost fighter, and Northrop submitted this aircraft for evaluation and General Electric submitted the F-16 Falcon. Both were tested and the Air Force was impressed with the performance of the Falcon. The United States Navy picked up the YF-17, renamed it the F/A-18, and put it to use on its carriers. The Falcon is a single engine aircraft, undesirable for carrier operations, whereas the Hornet has two, thereby making it safer in case of an engine malfunction, especially over water. The Hornet has already replaced the F-4 Phantom in a variety of roles, notably air-to-ground and wild weasel. It is slated to replace the F-14 Tomcat in its carrier defense role. Capable of performing equally air-to-air and air-to-ground tasks, it gets called upon for a wide variety of jobs. In this picture, we see that these Hornets are armed with AIM-9 Sidewinders one the wingtips and AIM-7 Sparrows on the fuselage.