What kind of job can a person with roofing contractor experience find?

My brother is a roofing contractor. He has more than 20 years of experience in this field. He used to have his own roofing business which was successful up until now (because of economy crisis). Now he is without job. He has been trying to find a job with a large roofing companies. However, he has an experience in residential roofing rather than commercial. I was wondering if there is possibly a quick course that he could take at home to be able to do something else. It could be roofing related or something else. Please advise. He has lots of pride and all that really brings him down. Thank you!