The importance of a soldier's foot speed has been known since well before Pheidippides made his famous run during the Battle of Marathon. And while humans on the whole are faster than their ancestors, thanks to more advanced technology and training methods, there are still biomechanical speed limits that mean our men and women in the armed forces will never be as quick as they (or their commanding officers) would like.
A long time ago, there were people experimenting with using pulse jets mounted on the tips of large rotors to make simple helicopters. By the looks of things, the idea just refuses to die, except now, the blades are mounted just inches above the operator's head. Sounds safe, no? Tecnologia Aeroespacial Mexicana (TAM) is behind the project. That company actually does offer some rocket packs which get strapped onto the adventurous rider's back, so perhaps the company will go all the way with this