WAUKESHA, Wis. - Frederick Edward Olsen Jr., 50, died unexpectedly Thursday, May 23, 2002, at his home.  He was born Oct. 21, 1951, in Bangor, Maine, the son of Frederick and Virginia (Crawford) Olsen.  He was a 1971 graduate of Brewer (Maine) High School. In his senior year he was a member of the All State Football Team, ranked fifth in the nation.  He was a U.S. Navy veteran serving from 1971 until 1975 and was an Eagle Scout.  In addition to his parents, he is survived by three sons, Fred and Jeff Olsen of Maine and Daniel Olsen of Texas; one daughter Tonya Olsen of Texas; his companion, Darlene Harrison; two brothers, Mike Olsen of Brewer and Jeff Olsen of Stratham; and several nieces and nephews.  Funeral services were held Sunday in Milwaukee, Wis. Burial will be Wednesday in Mt. Hope Cemetery, Bangor.  Memorial donations may be made to the American Heart Association.  Arrangements are by the Kiley Funeral Home, Bangor