Appreciate that. Let's get news from prince william. He is leaving the air force to focus on royal duties. And abc's lama hasan has the story. Reporter: William is giving up his life and his... See More
Appreciate that. Let's get news from prince william. He is leaving the air force to focus on royal duties. And abc's lama hasan has the story. Reporter: William is giving up his life and his adrenaline-fueled flying missions. Swapping a search and rescue pilot duties to focus on fatherhood, with kate and prince george, as his royal duties increase. This was no easy decision. The pressures of my other life are building. And fighting them off and balancing the two is proving quite difficult. Reporter: On wednesday, the two brothers hit the trading floor, making multibillion-dollar deals. Raising money for a couple of their favorite charities. And baby cambridge was not far from everyone's mind. Uncle harry is gushing about prince george. Overnight at another charity event, sharing some of those priceless family moments with william and kate. Talking about george's first smile. As william's life change, it's no secret his main focus is on his family. And it looks like the couple are getting a little helping hand from none other than william and harry's beloved nanny, jesse webb, as seen here when they MADE A PIT STOP at McDonald's. He has to accept that he is a future king. There's not many members of the royal family that the public loves as much as they love william and kate. He is as keen to spend as much time as possible with prince george. Reporter: It's a perfect time to hire a nanny. Tonight, the glamorous duo will be out and about. Kate will join william at a charity event close to his heart, celebrating african conservation. George and robin? Lama, thanks very much.
This transcript has been automatically generated and may not be 100% accurate.