David Altenburg

Dave is the sole owner of Defender Tactical, LLC.  He served 15 years on active duty in the Marine Corps before entering on duty with the FBI as a Special Agent.

Recently retired from the FBI, he served 20 years in a variety of assignments within the Violent Crime Program, Personal Security Detail, Intelligence Collection and International Counterterrorism.

His certifications include:

  • FBI SWAT Operator
  • FBI SWAT Sniper
  • FBI Firearms Instructor
  • FBI Tactical Instructor
  • Virginia Department of Criminal Justice Service (DCJS) Firearms Instructor
  • VA DCJS General Instructor Course
  • NRA Pistol Instructor
  • H&K Concealed Carry Instructor
  • H&K Shoot House Instructor
  • Glock Armorer Course
  • Springfield XD/XDm Armorer

In addition to the formal certifications cited above he has attended and continues to attend firearms courses provided by nationally known professional instructors.


Joanne Altenburg

Joanne is a veteran who served six years in the US Air Force as a Weapons Control Officer aboard the AWACS aircraft. She recently retired from the FBI as a Special Agent after 20 years of service. She is a certified FBI Firearms Instructor.


Adjunct Instructors

Defender Tactical utilizes an experienced group of adjunct instructors from diverse backgrounds which include the military, law enforcement, protective security and competitive shooting.