About the Author

James L. Greenstone, Ed.D., J.D. is a psychotherapist, mediator, arbitrator, negotiator, author, professor, police officer, editor-in-chief, military officer, and police behavioral health specialist. Sharon C. Leviton, Ph.D. holds degrees in education and crisis intervention and serves as a crisis specialist and dispute mediator in private practice. Weldon Walles is an honorably retired Texas Master Peace Officer who served with the Fort Worth Police Department for 25 years. George C. Klein, Ph.D. is a professor emeritus at Oakton Community College. He has a doctorate in sociology and criminal justice. He was a part-time police officer, is a trained hostage negotiator, and was a consultant to the FBI.