The security expert spoke to Sean Moncrieff ahead of the tournament
"Follow the instructions you are given. No jokes about bombs. No jokes about explosives. No chants or anything silly. Enjoy yourself, but be vigilant."
That's the advice of security expert Dr. Tom Clonan, who was speaking to the Moncrieff show ahead of Euro 2016. Thousands of Irish fans will travel to France for the tournament which begins on Friday evening. Ireland's opening game is against Sweden on Monday.
Dr. Clonan admitted that he feels a terrorist attack will not happen in any of the ten stadia, or the fan parks as security around those venues will be very tight. "My instinct or my intuition tells me that they would attack something like a campsite where you have lots of foreign people congregated."
Ireland play Belgium in the their second game of the tournament in Bordeaux. Clonan thinks that that game has a higher risk than others due to the opposition. "If we are playing France for example, French fans would be a high-profile target. If we are playing Belgium, just be aware that there is a heightened risk of attack."
"Be reassured that there are 42,000 police being deployed in France during the period of (the tournament). 10,000 plain-clothes and uniformed special forces from the military. 30,000 paramilitary Gendarmes. You have all of that readiness."
"Carry an Irish passport with you at all times" is one of Dr. Clonan's main pieces of advice. "In previous Islamist attacks, victims were asked their nationalities. British and Americans were identified, isolated and executed... If you could show you were an Irish citizen, that might differentiate you."
Despite the terror threat, Clonan feels that cultural differences between Ireland and France remain the biggest danger. "I still think the greatest risk of injury or death in France is when we tend to look left or right crossing the road. You have a have a greater chance being knocked down by a bus."
Ireland's opening game is against Sweden on Monday in the Stade de France.