Walter H. Halloran SJ (September 21, 1921 – March 1, 2005) was a Catholic priest[1] of the Society of Jesus who, at the age of twenty-six, assisted in the exorcism of Roland Doe in Washington, D.C. and St. Louis, Missouri.
In 1963 he moved to Marquette University, where he taught history until 1966 when he volunteered for chaplain duty with the United States Army.
He first served in Germany but in 1969, at the age of 48, he volunteered for paratrooper training and then for duty in Vietnam where he would say he saw more evil than in the boy's hospital bed back in 1949.
Halloran would have a variety of assignments from then on, such as being an associate pastor in his hometown of Jackson, Minnesota, and running a parish ministry in San Diego, California.
"[5][3] In 2003, Halloran was diagnosed with cancer and retired to the St. Camillus Jesuit Community in Wauwatosa, Wisconsin, where he died on March 1, 2005.