This is Kate Hoit and her mom, Diane. The 31-year-old's parents live in Albany, New York, and she is currently living in Virginia.
Hoit is an Army veteran and was deployed in Iraq from 2004 to 2005. When she was away, her family learned that her dad, Bill, had Alzheimer's disease.
Hoit told BuzzFeed News her father's decline was "very sudden and fast." He now lives in a nursing home.
"This past weekend, my mom and I spent time with him and he thought I was his sister and forgot my name," she said.