Tornado jets landing at RAF Akrotiri after raids

The transcript discusses keeping a radio in the pocket, makes a reference to a song about a radio in the pocket, and concludes with the phrase 'Roger, Roger'.

What do you think is meant by keeping the radio in the pocket?

Why might someone want to keep a radio in their pocket?

What are some possible contexts in which the phrase 'Keep the radio in the pocket' could be used?

How would you interpret the phrase 'like a song radio in your pocket'?

What does the repetition of 'Roger, Roger' signify in communication?