Ladies and Gentleman, on behalf of Captain Tempest and his crew may we welcome you aboard Routine Scientific Survey Flight Nine.
Before we enter into an outgoing take-off scenario it is space fleet command regulations that we take you through emergency procedures.
Firstly, may we respectfully point out that the use of all audio visual recording devices, including flash photography, is strictly prohibited on board this flight.
Secondly, may we point out the emergency exits. They are located here, here and here.
In the event of cabin decompression, oxygen masks will come down from the overhead compartments. Place them over your mouth and nose and breathe normally.
Finally the POLARITY REVERSAL DRILL. If you look below you/ahead, you will see the Klystron Generator.
On it is marked "KLYSTON GENERATOR. DANGER. DO NOT REVERSE POLARITY"
Polarity reversal is a very dangerous procedure that's why we tell you not to do it. However, in the unlikely event of entering a polarity reversal situation, we ask you to follow this simple drill: