Astronaut nurse Delores B. O'Hara, R.N., in the Aeromedical Laboratory at Cape Canaveral, Florida, takes a blood sample from Mercury astronaut John H. Glenn Jr.
Astronaut nurse Delores B. O’Hara, R.N., in the Aeromedical Laboratory at Cape Canaveral, Florida, takes a blood sample from Mercury astronaut John H. Glenn Jr. Photo credit: NASA