Delta Team

Delta Team is a dayshift team that works from 0630 hours (6:30AM) to 1630 hours (4:30PM). Their scheduled days off are Thursday, Friday and Saturday. The Delta Team's Watch Commander is Captain Alvin Winham and his Lieutenants are Lt. Darrell Southerland and Lt. John Schwenk.



Captain Alvin Winham Jr. was hired with the Lawton Police Department in May 1998. At the end of 1998 he was assigned to the Lawton Police Department Canine section as a Canine Handler. In 2000 he was assigned to the Lawton Police Department Tactical Team and is the current Tact Team Commander.

Captain Alvin Winham is defensive Tactics Instructor, Firearms Instructor, Rifle Instructor and a member of the Honor Guard. Alvin Winham was promoted to the rank of Captain in May 2012. Captain Alvin Winham is the current Watch Commander of Delta Team.

Captain Winham serves as the Tact Team Commander, Fleet Manager, Department Audit Coordinator and he sits on the Accident Review Board.

Captain Winham can be reached at (580) 581-3533 or


Lieutenant John Schwenk, Jr. was born and raised in Lawton, OK. He attended MacArthur High School and obtained a degree from Cameron University. Schwenk began his career with the Lawton Police Department on May 3rd, 1999. He served in the Uniform Division for over 11 years. During that time, Schwenk was utilized for several years as a Traffic Officer. He attended Traffic Collision training as well as DUI enforcement training that included him accomplishing certification as a DRE (Drug recognition Expert) through IACP. The following year Schwenk became a DRE Instructor. Schwenk was also a member of the Department’s Bike Patrol Team.

In September of 2010, Schwenk became a Detective and was reassigned to the (CID) Criminal Investigation Division. Schwenk was soon designated as one of the Divisions Fraud/White Collar Investigators, primarily investigating those specified cases for about 2 ½ years, until he was designated as the Divisions Audio/Video Forensic Investigator. While in CID, Schwenk investigated all kinds of cases, ranging from Petit Larceny to Murder.

Schwenk is a member of the Departments Crisis Negotiation Team. He has also been utilized extensively as a Field Training Officer to help train new officers.

Lt. Schwenk can be reached at (580) 580-3225 or



Lieutenant Southerland was hired by the Lawton Police Department in 1989 and in 2002, he was promoted to Lieutenant. During his service to the department, Lt. Southerland has served as a Team Leader on the Tactical Team, responding to hostage situations, search warrants, and apprehension of homicide suspects.

Lt. Southerland has received specialized training in tactical suituations and gang prevention and awareness. In 2006, Lt. Southerland was chosen to lead the Gang Task Force and in 2012 he received a Lifetime Achievement Award from the Oklahoma Gang Investigators Association. He also received the departments Meritorious Conduct Award in 2009.

Lt. Southerland can be reached at (580) 580-3225 or