He joined Bombardier as sales manager for Short Brothers, the oldest aircraft manufacturer in the world, subsequently moving into the corporation's business aircraft division. At Bombardier, Lambarth distinguished himself by leading sales for 150 aircraft with a combined value of nearly USD$3 billion. "I've spent the past three decades building long-term customer relationships based on trust, and I look forward to continuing this while expanding Guardian Jet's presence in Europe," said Lambarth. "I really feel confident that, in Guardian Jet, I am joining a company fully in tune with my own ethos and values."