Home Health Aide Needed

About who needs care: Looking for in-home care for my father who has Alzheimer's. He is 70 and physically healthy/mobile. Need someone to stay at the house with him some afternoons on the weekends. He mostly just sits to watch tv or wonders the house. About the care needs: Someone who has experience caring for someone with Alzheimer's or dementia. They need to understand that he cannot wonder outside alone or be left unattended. My dad is a retired Navy Admiral so military experience may be a common interest (but not necessary given his memory). Services needed include: companionship.