Lance Burdett spent 22 years with New Zealand Police, where he worked as a crisis negotiator specialising in suicide intervention and in predicting violent behaviour. During that time, he also gained a Master's degree in terrorism, safety and security. He describes this work in his first book, Behind the Tape: life on the police frontline, published by Allen and Unwin in 2018. He remains New Zealand media's go-to person for comment on policing. Upon leaving the police, he established WARN International, a company which specializes in mental health, resilience, communication and wellness training. Through their workshops and course, the company seeks to inspire and motivate, providing participants with the skills to look after both themselves and each other; while improving organisational culture and assisting with personal growth. Recent clients include: WorkSafe, ACC, ANZ, IAG (State, NZI, AMI, etc.), BNZ, Ministry of Social Development, AA, Auckland Transport, NZTA, University of Auckland and AUT.