They close when the enimies are alert. They also close when you retrieve whats in them, lyk large or small amounts of money, or weapon parts.
40th = fortieth.
Yes, St. Louis, Missouri is located approximately at 38.63 degrees north latitude, which is slightly below the 40th parallel.
The 40th multiple of 15 are 600.
40th birthday
Happy 40th Birthday Patricia
places/venues to have a 40th birthday party.
The 40th episode in Spongebob's top 100 is dumped.
Water Displacement - 40th Attempt
The initials of Ronald Reagan, who is considered the 40th U. S. President, are R.W.R.
2 to the 40th power is the same as 2 times itself 40 times.
Salt Lake City is north of the 40th parallel not south!
The 40th largest country in the world by land area is Poland.