Has he considered teaching PE and IT either to adults or in a school (private or state). Teaching adults does not pay as well as teaching kids but can be less challenging. The thing about the pay is, it is on the high side for him while in the army as a compensation for being shot at - most jobs outside the army don't have this as an expectation so the pay is lower. He might need to get his head around a temporary lower pay packet in order to have a wider range of options.