An emergency meeting of EU transport bosses is being held in Paris today, after last week's attempted shooting on a train.
Ministers and transport officials will discuss threats on European railways following last Friday's attack.
Charges have been filed against a 25-year-old suspect, after a heavily-armed man was pinned down by passengers.
Ex-British Transport Police officer John Wilson believes extra train security's needed in the UK - but worries how it would work.
