reporter: van der biesen attempted to get into the station to help, but there was too much smoke. nowadays, he is trying to forget the horror and to look at the bright side. mrvan der biesen: i want to remember the positive things about it, if there are any. it's the solidarity we saw that day between people, how everyone tried to help out each other, how strong people are. if you see some of the victims or their family members, what they are doing, they are creating work groups to talk about the events and all those kind of things. it shows for me how strong we are as human beings. reporter: and how strong human beings have to be to survive. 32 people were killed in the attacks last year and 10 times more were injured. one year on, the healing process is far from over. michelle: belgium remains on high alert with a threat level of three out of four. it seems that there and in so many other european cities, people have simply learned to live with the threat of terror. tourism is booming in the portuguese capital lisbon. unfortunately, that boom has also come with a bust. many locals have been driven out of their apartments because landlords prefer to rent to

reporter: van der biesen attempted to get into the station to help, but there was too much smoke. nowadays, he is trying to forget the horror and to look at the bright side. mrvan der biesen: i want to remember the positive things about it, if there are any. it's the solididarity we saw tt day between people, how everyone tried to help out each other, how strong people are. if you see some of the victims or their family members, what they are doing, they are creating work groups to talk about the events and all those kind of things. it shows for me how strong we are as human beings. reporter: : and how strong humn beings have to be to survive. 32 people were killed in the attacks last year and 10 times more were injured. one year on, the healing process is far from over. michelle: belgium remains on high alert with a threat level of three out of fofour. it seems that there and in so many other e european cities,, people have simply learned to live with the threat of terror. tourism is booming in the portuguese capital lisbon. unfortunately, that boom has also come with a bust. many locals have been driven out of their apartments because landlords prefer to r