Hi @Mary_Beth_Burns!
To reset the position of a camera when it falls down you can do the following:
- Create a ‘resetZone’ - cube which defines where the reset should happen
- Add the camera item and the resetZone cube to CoBlocks
Then, in CoBlocks:
- Save the starting position of the camera to a variable
- Use a “when collision” - block to check when the camera collides with the resetZone cube
- When the collision happens, place the camera back to the starting position
Below you can find an example space you can remix to see how it’s done in CoBlocks 
Hope this helped!