 Hi, I'm Caroline, and today I'm at the Science and Tech Museum. The museum is currently closed, but there's lots of action happening here today. Gordon, what's actually happening today at the museum? Today, as the museum is closed, we have two periscopes in the museum that have been on display and are very popular with the public since 1969. We're going to be renovating the roof, removing the roof, so the periscopes, because they're from submarines and they go straight through the roof, we have to take them out in order to safeguard them, and they actually will be returned to the Department of Marine in the United States. The periscopes are about 14 meters long each, they weigh about 1,000 kilograms, and we have to do one piece, and they have to be collared and then raised straight up the roof and then off onto a flatbed that's waiting here.