There will be a significant training burden - where and when will the Bristow crews be starting their NVG training? The timescale declared by the Bristow spokesman looked quite tight yet you would have thought that the aircrew would need at least a month away from the frontline to conduct dedicated overland NVG training sorties to get familiar with handling, depth perception, navigation, weather hazards, map preparation, obstruction avoidance etc. Trying to convert to NVGs in the middle of summer could be a bit of a challenge when you've only got about 2 hours of darkness to play with. Will they be heading south?