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.
More top news
Residents have complained that you ‘wouldn’t even know it’s Christmas’ in one Midlands high street, because of the lack of festive lighting.
Staying very cold with light snow easing through the morning.
Very cold tonight. Mainly dry and bright tomorrow.