Until I have found that last link in my chain, I must remain behind the scenes. 
I must remain behind the scenes until I have the last link in my chain.
I must not remain behind the scenes without the last link in my chain.
The two men are outside.
A group of men are cooking.
Three swimmers are swimming laps in the pool.
The red wing blackbird swoops down on a Holstien bull, ready for the kill.
A woman adjusts a kids hair.
A man with his hair gelled into spikes is sitting in the shade