T-Four Management Team


Chief Executive Officer
John Richmond, TDG, Inc.
703-489-6904.
Chief Operating Officer
Ed McDonald , EM Surv
703-357-5624
Chief Technical Officer
Jean Schultz, E&M Technologies
410-980-1808
Chief Security Officer
Chris Stahl, BiC-1
240-701-2434
Chief Business Officer
Minerva McDonald, EM Surv
703-906-8234