With King Charles receiving weekly treatments for his cancer in London, his son Prince William has taken upon himself to step in for his father and the crown and fulfill the royal duties.

What’s most, William is also busy being there for his wife who’s currently recuperating from her planned abdominal surgery and taking care of the children, Prince George, Princess Charlotte, and Prince Louis.

Recently, William attended an event to raise money for London’s Air Ambulance. There, he spoke of his wife and father and thanked everyone for “the kind messages of support for Catherine and for my father, especially in recent days.”

Among the rest of the attendees, there was actor Tom Cruise whom the Prince joked with saying he shouldn’t “borrow” any of the helicopters.

“If you wouldn’t mind not borrowing either of the new helicopters for the next Mission Impossible, it would be appreciated,” the Prince said.

“We have all seen on our screens that, how can I put it, you seem to have a different take on normal wear and tear to the rest of us,” he stated.

Speaking of the importance of the event, William said, “It’s fair to say the past few weeks have had a rather ‘medical’ focus. So I thought I’d come to an air ambulance function to get away from it all!

“But, seriously, we gather tonight to help as many as people as possible benefit from top class care in the silhouette of London Air Ambulance’s flying lifelines. As a former pilot for East Anglia Air Ambulance, I know just how vital the work of air ambulance teams across the country is, and the truly life-saving difference it can make to deliver urgent medical care wherever injury strikes can make.

“Here in London, the current aircraft have served magnificently. But our capital city needs a new fleet. And we are Up Against Time. The clue really is in the Appeal’s name. By September, we need the two new red birds – decked with the latest kit such as night vision – in our skies.

The prince was also seen talking with Ellen Convery, who used to be known as Ellen White and played more than 100 games for the England women’s football team.

While receiving treatment, King Charles will not be attending public events. Between treatments, he’s spending time at the Sandringham estate.

Details of the type of cancer he has been diagnosed with have not been disclosed with the public.