Watch the full interview with fighter pilot Heather Penney on the Sky News Defence Insider app on Friday 11 September It has been 25 years since 9/11, when two hijacked planes were deliberately flown into the two World Trade Centre towers. Sky's David Blevins spoke to the mother of one of the victims and the F-16 pilot who was assigned with crashing into United Flight 93 before it reached Washington. Full interview with fighter pilot Heather Penney on the Sky News Defence Insider app on Friday/tomorrow. #9/11 #newyork #anniversary #us #skynews SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on X: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow us on TikTok: https://www.tiktok.com/@skynews For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB Why not listen to one of our podcasts? This is Why, available for free here: https://podfollow.com/thisiswhy or Ed Conway's Stuff Matters, available here: https://podfollow.com/stuff-matters To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales