Numbers of the day: Cost per troop in Afghanistan
$850,000 — Department of Defense estimate of what it costs to keep a service member in Afghanistan for a year.
$1.2 million — What the Center for Strategic and Budgetary Assessments says it has cost.
$1.4 million — What the Center esimates it will cost in 2012.
$30,000 — Base pay of an Army sergeant with four years’ experience.
SOURCE: Wired’s Security Clearance.