JFO-class Mjolnir

The MJOLNIR/JFO is a variant of the MJOLNIR Powered Assault Armor. It was designed and tested at the Beweglichkeitsrüstungsysteme facility in Essen, Germany.

Helmet Characteristics
Price: 60,000 cR

The JFO helmet appears in the armory upon reaching the rank of Warrant Officer, but isn't unlocked until Lt. Colonel.

Two upgrades are available for the helmet, the first adds a Hardened Uplink Module-Improved (HUL-I), and the second adds an Up-Armor plate (UA).

Shoulder characteristics
Price: 1,000 cR

It is one of the shoulders available at the start.

Attachment characteristics
The HUL-I, or Hardened Uplink Module-Improved, is an attachment available for the JFO helmet. The attachment is an upgraded variant of the standard issue Hardened Uplink Module, an attachment that is made available only for the EVA[C] helmet.
 * HUL-I (20,000 cR)

The UA, or Up-Armor, is an attachment available for the JFO, Grenadier, MJOLNIR Powered Assault Armor/Mark V(B), and MJOLNIR Powered Assault Armor/Mark V helmets. It increases the wearer's protection against various weapons and explosions.
 * UA (10,000 cR)

Trivia

 * JFO stands for Joint Fires Observer, a United States military designation for troops who coordinate fire support from land-based artillery and naval gun formations, as well as close air support.
 * The visor of the JFO helmet somewhat resembles the faceplate of the armored Marvel character Iron Man.

List of appearances

 * Halo: Reach