"What do you call a frog spy" joke

One day, a French spy received a coded message from an American spy claiming it came directly from President Bush. It read: S370HSSV-0773H.
The spy was stumped, so he sent it to his boss at the agency. His boss was stumped too, so he sent it to the Russians for more...

Who was the first underwater spy?
James Pond!

Three men are in a hot air balloon. Soon, they find themselves lost in a canyon
somewhere.
One of the three men says, "I have got an idea. We can call for help in this
canyon and the echo will carry our voices far." He leans over the basket and
yells more...