From the roof of the chamber, four ribbon sections of personal armor, big enough for a full-rate Promethean, dropped slowly through dilations. The pieces hovered on both sides of the sling, and from them depended long tentacles transparent as glass which quickly filled with three colors of liquid—the basic electrolytes and nutrients required for long journeys. Most Forerunner armor was equipped to keep the wearer alive for years without outside sustenance.

Halo: Cryptum Ch 5