Q: My brother retired from the U.S. Postal Service a few years ago. He passed away a few weeks ago, and his wife asked the San Antonio post office how she could apply for his insurance. She was told that he had no insurance. He specifically told me that he did: I retired from civil service and have insurance, and my brother said that he had the same sort of coverage. If he has a claim it would be a great aid to his widow. A: His widow should call the Office of Personnel Management’s Retirement Information Office at 888-767-6738…