Lieutenant Knowland was born and raised in Los Angeles County. Lieutenant Knowland began his Law Enforcement career at the 30th Regional Police Academy in 1995 as an open enrollee and began his career with the Oceanside Police Department upon completion.
Lieutenant Knowland is currently assigned as a Watch Commander in the Field Operations Division. In addition, Lieutenant Knowland is the Commander of Special Weapons and Tactics (SWAT).
Lieutenant Knowland has held a variety of assignments throughout his career, including NETWork, Field Training Officer, and SWAT Operator. In 2002, he was selected as a Gang Detective in the Special Enforcement Section. In 2004, he was assigned to the North County Gang Task Force where he remained until his promotion to Sergeant in 2008. In 2009, Lieutenant Knowland returned to the Special Enforcement Section as the gang unit Sergeant until October 2011 when he was promoted to his current rank. Lieutenant Knowland was assigned as a Watch Commander with the collateral responsibility of Harbor Commander until January 2013 when he returned to the Special Enforcement Section as the unit Commander. Lieutenant Knowland returned to SWAT as the Executive Officer in 2013 and assumed command of the team in July 2015.