JFO-class Mjolnir

The MJOLNIR Powered Assault Armor/Mark V[J] is a variant of the MJOLNIR Powered Assault Armor. It was designed and tested at the Beweglichkeitsrüstungsysteme facility in Essen, Germany for use with the Mark V MJOLNIR armor.

Helmet
Price: 60,000 cR

The JFO helmet appears in the armory upon reaching the rank of Warrant Officer, but is not unlocked until Lieutenant 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).

Shoulders
Price: 1,000 cR

The JFO shoulder pauldrons are available from the beginning of the game.

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

The Up-Armor plate, or (UA), is available for the JFO, Grenadier, MJOLNIR Powered Assault Armor/Mark V(B), and 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 Marvel Comics character Iron Man.

List of appearances

 * Halo: Reach