Coastal Command | Anti-shipping use of rockets

Picked one by one from a mixed channel. Transcript check: both title readers certain; 4 of 5 sampled certain picks confirmed by transcript, none failed. Channel rule: Include only the channel's original history documentaries and the wartime instructional, training or technical demonstration films (titles marked 'Instructional Film', 'Training Film', 'Documentary', 'demonstration', painter's or manual guides); exclude feature movies, dramatisations, recruitment and promotional films, and short untitled archive clips under ~10 minutes.