Captain John Albert “Cal” Struk, Maine State Prison-retired, 67, died April 19, 2011, at his home following an extended illness, his loving family. For more than 23 years, he served as a corrections officer at Maine State Prison, retiring as a captain in 2003. He was a founding member and team leader for the MSP K9 Unit. While serving that unit his most special dog was his partner, Mac, a bloodhound who specialized in mantracking/search and rescue. He served several years with the U.S. Air Force Reserves. He is survived by his wife, Joy Ellen Mansfield Struk and three daughters, Jennifer S. Struk, Teresa M. Fish, and Karen E. Struk. Honors were rendered by the Maine State Prison Honor Guard. Memorial donations may be made to the American Cancer Society, New England Division Inc., 1 Bowdoin Mill Island, Suite 300, Topsham, ME 04086; or the Humane Society of Knox County, P.O. Box 1294, Rockland, ME 04841.