Frederick J. Lewis Jr. has spent a lifetime keeping people safe. He developed innovative military accouterment, including a lightweight armored vest used in the Korean War. In 1955, he instituted the first study on military helmet design. He also helped develop Emergency Medical Services in the United States. In 1974, he retired from civil service and now lives in Catlett, Va., with his wife, Irene. Throughout his career, Lewis pursued a hobby he picked up during World War II: photography. Given a camera and asked to document wartime life for his naval unit, Lewis photographed everything from the invasion of North Africa to pyramids, mosques and camels. Recently, he donated his war photos, 13 lenses and his lifetime collection of cameras — 32 in all, the oldest from 1925 — to the Photocommunications program at St. Edward’s.