As Johnny starts walking out the door with the Doctor, it strikes him. "Hurry up and clear the building." Stone not only spotted the gun, he just called for backup. At the same time, he's trying to push Johnny out the door... Trying to avoid an armed conflict?
"Doc, come over here a minute. I need to get your thumbprint to sign off for your guest."
The Doctor hesitated by the door, then turned and faced Stone. "No," he said defiantly. "I'm done here. Someone has finally taken an interest in my work and now I'm going to go meet them. I told them all that it was possible, but the never believed me - not a single biotech corp. I sank everything I had into my research just to get to this point, and now I'm ready to go forward, with whomever will help me continue. I appreciate your service, but I'm leaving."
At this point, Dr. Leary was actually pushing Johnny out the door. "I'm ready," Leary said. "Where's the car?"