Leon Pieschek, Founder and President of Pieschek Protective Services/b Founded in 1993. Pieschek Protective Services is owned and managed by Leon R. Pieschek, whose long law enforcement career has earned him a statewide reputation for his to his decade of managing one of Wisconsins largest law enforcement agencies, and as Brown Countys top law enforcement manager, Pieschek is a graduate of the FBI National Academy, Quantico, Virginia.