Enter this Wile E. Coyote-like contraption (or Titanfall, for our younger readers) from a team at Arizona State University. The team, led by student Jason Kerestes and Prof. Thomas Sugar of the university's Human Machine Integration Lab started working on robotics to benefit the disabled, before DARPA got involved and asked them to go to work on robotic aids for foot soldiers. Their goal is to design a back-mounted jetpack that would help propel the average soldier to a four-minute mile.
They've already trimmed about 20 seconds off their test runner's one-mile time, so there could be some merit to their work. Check out their jetpack system in the video.