[JURIST] A former contractor for Blackwater [JURIST news archive], now known as Xe Services [corporate website], was sentenced [press release] Monday to two-and-a-half years in prison for the 2009 shooting of an unarmed Afghan civilian in Kabul. Justin Cannon was convicted in the US District Court for the Eastern District of Virginia in Norfolk, VA in March, along with Christopher Drotleff, for involuntary manslaughter. Drotleff was sentenced to 37 months in prison earlier this month. They are the first contractors…