. >> emmanuel l krohn will be -- mccrone will be traveling to beirut tomorrow.rench aid is on route to the city. harris sent heat of your luke perry planes with sq experts, sanitary equipment, and a mobile clinic equipped to treat 500 people. lebanon's president appealed for international assistance to be stepped up. ar more, we can bring in firefighter and vice president of the national union of professional firefighters here in france. thank you for joining us. when you saw the images of the blast, did it looook like an amammonium nitrate e explosisio? >>>> yes. you can see it w was like a a wr zone. it is a characteristic explosion. this in past of years in france. explosion which was an ammonium nitrate explosion too. that there wase is only 300 t ts of this chemical. a almost 3000as nsns. >> how do you store ammonium nitrate safely? this is a highly explosive chemical. yeses, if not kept properly. ammonium nitrate is a very common component in the chemical industry. is very safe and pure, there is no o problem with this. the problem is when ammonium becomes