You’re a member of a bomb disposal squad that’s currently on the radio with their partner.

He’s in the process of defusing a complicated explosive device somewhere far away from you, but he forgot to bring the bomb defusal manual with him.

You sit at your desk at HQ with the manual open in front of you. Hopefully you two can communicate efficiently enough like this to defuse the bomb before it goes off...

You press the button on your radio and start talking.