Professional fire crews pitch in to help volunteers fight bushfires | 7.30

Volunteer firefighters are bearing the biggest load in the battle against bushfires. But professional fire crews from the city are also pitching in. One crew, the Ingleburn 79ers, escaped a giant fireball while fighting fires south west of Sydney. For more from ABC News, click here: https://ab.co/2kxYCZY If you're in Australia, you can watch more ABC News content on iview: https://ab.co/2mge4KH Subscribe to us on YouTube: http://ab.co/1svxLVE Go deeper on our ABC News In-depth channel: https://ab.co/2lNeBn2 You can also like us on Facebook:   / abcnews.au   Or follow us on Instagram:   / abcnews_au   Or even on Twitter:   / abcnews