IMTU:
Q: How many Inheritors do you need to replace a light bulb?
A: Ten: nine to scour (sp?) the Precursor ruins for a salvagable replacement bulb, and one to screw the old one out and the new one in.
Q: How many Solar Triumvirate government officials do you need to replace a light bulb?
A: One hundred: Ten to form an Investigative Comitee to investigate the circumstances of it's breaking; Twenty to fill the supply forms needed to get a replacement; one to actually replace the light bulb; four to oversee the operation; and 65 to appear on media and blame the Alliance and/or the Matriarchate for it's breaking, regardless of what the Investigative Comitee finds out.
Q: How many Solar Triumvirate Jump Troops do you need to change a light bulb?
A: One squad: one Lance Sargeant to give the order, one Private to replace the lightbulb, and the rest to parade around in Combat Armor and Gauss Rifles to ward off the (probably non-existant) Alliance forces who've broken the lightbulb.
(or, the version of the above joke which is told in the Solar Triumvirate Army):
Q: How many Solar Triumvirate Jump Troops do you need to change a light bulb?
A: One squad: one Lance Sargeant to give the order, one Private to try to replace the lightbulb and fail, and the rest to do pushups in the dark as a punishment for their squadmate's inept handling of the light bulb.