Betty Reid Soskin officially became a National Park Service ranger in 2004. She works at the Rosie the Riveter/WWII Home Front National Historic Park. WASHINGTON — The National Park Service's oldest active ranger Betty Reid Soskin is celebrating her 100th birthday on Wednesday. Soskin, who was born in Detroit, Michigan on September 22, 1921, works at the Rosie the Riveter/WWII Home Front National Historical Park in Richmond, California.