Yes, Tony was no longer an impetuous young man. He could believe Banner, but he would not rely entirely on the man to control his emotions.
His "ex-girlfriend," Cassandra, had taught Tony quite a few lessons. He had learned from her not to trust anyone completely—especially since the prettier a woman was, the less trustworthy she tended to be.
And for a beautiful woman, many men would do anything. That included his former self.
Following that line of reasoning, Betty was very beautiful, and Banner was currently working hard to cure her. That was a potential danger.
So, when Banner had happily hugged him earlier, Tony had secretly slipped a tracking device into the doctor's pocket. That way, he could find out where Bruce went after leaving him—or where he lost control.
If nothing happened, Tony naturally would not betray Dr. Banner's location. He sympathized with the man.
But if something did happen, he would immediately notify S.H.I.E.L.D. to enact the measures in their contingency plan. After witnessing the Hulk's threat years ago, Black Egg had drawn up a tiered series of response plans: capture, control, exile, and kill.
It was a little grim. Tony himself opposed killing another scientist, but he did not object to placing Banner under protective confinement after he lost control. It would be better for everyone.
The projection inside his helmet displayed a map of New York City, where a green dot blinked steadily. Tony narrowed his eyes and recognized the location as ESU, not far from here—Empire State University.
That made sense. Only the biology lab there met the requirements and had enough equipment to produce anti-radiation medicine.
"Steve?" Tony nudged the captain's arm to bring him back to himself. "We need to move. I suspect Dr. Banner is walking into a trap. The