The two men were shot by two men wearing Afghan police uniforms.
The inquest heard an intelligence report that said "insider threat" was difficult to detect. Insurgents and the Taliban used this kind of attack as a tactic and there had been no increase in this kind of threat.
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Des Coleman has the latest forecast for the West Midlands.
Des Coleman has the latest forecast for the East Midlands.
An ex-bookkeeper accused of raping and murdering a barmaid has told a jury his "over-eagerness" to satisfy her in bed caused her death.