Mr. B, an 85-year-old assisted living resident, has Alzheimer's dementia. Often, his 60-year-old son takes him out golfing and to lunch. He also enjoys visits from his great-grandchildren, but he can 't always remember them. Though popular with the staff, Mr. B can be a bit cranky; some days he resists showering and putting on clean clothes. But he still has a pretty clear sense of how he wants to live. Mr. B's son, daughtemn-law and daughter support his wishes, even his desire to take neighborhood walks, though the staff fears he might fall or become lost. So his family has made sure he is listed with the Alzheimer's Association "Safe Return" program. They've also gotten him a GPS pager …