Jump pack

The Jump Pack is a high-mobility propulsion equipment used by the Jiralhanae infantryman of the Covenant.

Overview
The Jump Pack allows for accurate and precise jumps from location to location, giving the Jiralhanae the mobility and tactical flexibility that they often lack. Unlike the Antigravity Packs used by Sangheili Rangers, these do not provide them with a permanent airborne presence or the ability to accurately fight and hover.

The equipment is designed for use on a terrestrial environment where after the initial jump they can rely on gravity to bring them back to ground, whereas in Zero-Gravity environments they would simply be blown out into space. It seems that the Jump Pack needs a few seconds to recharge or cool down after a jump, since its users wait a while before making another.