Tracking and Tactical Field Craft were part of OSI's core business for many years. Classes were taught in many forums, to include through the Northeast GA Police Academy, Private Classes and adjunct to departmental tactical or investigator's training. OSI produced literally the first tactical tracking training video that won a couple of awards. The team also worked pretty extensively with David Scott-Donelan (TTOS) for a while before the trail split ways. One of the elements that brought a unique spin to OSI programs was the use of technology and supplementing field craft with various technologies like night vision, thermal imagery, sensors and even the development of a specialized ghillie technology designed by Custom Concealment.

Murrel Tyson was really the pioneer of OSI's program, as he recruited Henderman in 1990 to work with him as an apprentice tracker. They taught hundreds of students from many levels of different agencies. Henderman had a knack at field craft from growing up in KY and hunting, fishing and dealing with poachers and marijuana growers even on his family's land. Tyson honed his skill and continuously sought to expand the program by building relationships and studying with other trackers around the U.S. One interesting piece of history was that Henderman had the honor of reviewing David Scott-Donelan's book prior to it being published. At that time, the two built a good friendship and even for a short time merged some of their operations for training. OSI became the first "certified" TTOS Tactical Tracking affiliate. However, personnel issues dusted that trail. Regardless, it was still an honor to work together. Donelan reviewed the OSI video and had great comments, but one very valuable criticism that he brought that ultimately lead to another project being developed was the use (or lack of) camouflage. He noted that American LE SWAT and SRT were wearing black LBE over camo BDUs. The lesson learned changed the entire perspective for OSI. You'll find more on this under the link for "camouflage."