brad myers, on vacation from florida, had a narrow escape. after taking a selfie on the bridge, he walked away, and heard the van mount the sidewalk. here is the photo he took afterwards, bodies strewn across the road. >> i do think that everyone needs to see what is going on and what we're up against. >> reporter: all those who gathered at a vigil today know they're probably up against even more terrorists with london in their sights. but led by the city's muslim mayor, sadiq khan, they stand determined to face them down. >> i want to send a clear message to the sick and evil extremists who commit these hideous crimes. we will defeat you. you will not win. >> reporter: scott, mayor sad de -- sadiq khan was asked whether president trump would be welcome on a visit here. he said i don't think we should roll out the red carpet in circumsts for. >> liz palmer at londondg brie tonight. liz, thank you. the cbs overnight news will be right back. and your joints really love them too? introducing megared advanced 4in1... <

brad myers on vacation from florida had a narrow escape. taking a selfie on the bridge, he walked away and then heard the fan mount the sidewalk. here's the photo he took afterward, bodies strewn across the road. >> i do think that everyone needs to see, you know, what is going on and what we're up against. >> reporter: all those who quartered at a vigil today know they're probably up against even more terrorists with london in their sights. but led by the city's muslim mayor, sadiq kahn, they stand determined to face them down. >> i want to send a clear message to the sick and evil extremists who commit these hideous crimes: we will defeat you. you will not win. >> reporter: scott, mayor sadiq kahn was asked whether in light of his recent tweets donald trump would be welcome on a state visit here, and he said, "i don't think we should roll out the red carpet in circumstances whether his policies are against everything we stand for." >> pelly: liz palmer at london bridge tonight. liz, thank you. today the british police named two of the thr

moments ago, i spoke with american tourist brad myers who was at the scene overnight. brad, thank you for joining us. i know you're on a trip of a lifetime across europe. you happened to be on london bridge overnight. can you tell us what you saw and heard? >> sure. i was taking pictures on the london bridge, viewing the tower bridge, which is a picturesque bridge on the thames river. i went to the river walk, on the north side of the london bridge. went down the stairs. about two minutes later, i heard a loud noise behind me. and saw a van on the pedestrian sidewalk where i had just been two minutes previously. it was going through the pedestrian crowd that was there. it continued on down. i saw at least one person jump into the water in order to avoid it. saw people trying to get out of the way. and possibly vehicles were hit, as well. >> a horrifying scene. can you talk about the aftermath? did you go back up there after you saw what had happened? >> i walked back up the stairs. saw that at least two people were being attended to. by at least three or four passers by

minutes before the attack, brad myers on vacation from florida took a self fi on the bridge and thenard the van mount the sidewalk. you saw it excel rate? >> yes. >> here is the photo he took afterwards, victims and their possessions strewn all over the road. >> i do think that everyone needs to see what is going on and what we're up against. >> reporter: britain's prime minister theresa may this morning put it into words. >> this was an attack on london and the united kingdom, but it was also an attack on the free world. >> reporter: the challenge, of course, is what to do to prevent another attack, and whatever strategy the government comes up with, it's going to be controversial, difficult and expensive. gayle? >> thank you, elizabeth palmer reporting from london. so far we only know the name of one of the people killed in saturday's attack. she's christine archibald, a 30-year-old woman from canada. she was hit by the van at the start of the terrorist she died in the arms of her fiancee tyler ferguson. the two sceeen together in this picture. >>> prime minister theresa may says t