Don is a board-certified investigator, PCI by designation. For over 25 years he has personally led and/or conducted Executive Protection, Investigations and/or Training Operations from coast-to-coast and internationally. He is a member of ASIS and a published author: “Get Off The X” (2017) & “Fighting Handgun” (2019) and has been deposed and/or testified, including Force-on-Force training subject matter expert testimony in both Florida and New York State courts. As an instructor, he is a member of IALEFI, The International Association of Law Enforcement Firearms Instructors and holds NY State Instructor certifications as a Firearms Instructor and Use-of-Force/General Topics Instructor. He is an Active Shooter Response Instructor and Scenario Based Force-on-Force Instructor. His experience and expertise includes 25+ years of continued study, training and teaching security and armed guard practices, judicious use-of-force, tactical firearms and scenario/reality based force-on-force training. The American Tactical Shooters Association has recognized Don as a Tactician and a past winner of the prestigious National Tactical Invitational “NTI".