As he boarded the plane, Gao Yang didn't know whether Morgan was in Portland, but he still decided to make Portland his first stop because it was Morgan's hometown. He thought if anything unexpected happened, Morgan might find it easier to handle it.
Why not inform Morgan in advance? That was because Gao Yang was afraid of any mishap at the last step. Since he wanted to directly hand over the gun to Morgan, he decided to keep it secret until the last moment.
The only problem was that Morgan was a busy man, often flying all over the world. Although Gao Yang had asked Morgan about it recently, without a heads-up, by the time he arrived in Portland, Morgan might have already flown away. Yet, even if that happened, Gao Yang decided not to take out the gun until he saw Morgan.
After the plane had taken off, Karima's expression relaxed a little, but she also seemed somewhat downcast because, in a few hours, she would have to part ways with Gao Yang again.