Welsh politicians say plans for a new prison in Port Talbot are encouraging - but people living nearby need to be considered.
Terror Advice For Welsh Businesses
Some of Wales' biggest venues have been hearing how they can spot extremists.
Bosses from places including the Millenium Stadium, Cineworld and St David's shopping centre have been told how to prevent terror attacks.
Detective Chief Superintendent Darren Davies works in counter terrorism.
He said: "They are being briefed to be alert for anything out of the ordinary, unusual, people who appear to be taking photographs in unusual circumstances, acquiring items that may be of use for terrorist purposes.
The UK terror threat is at severe but we're being told there's no specific threat. Darren said: "There's definately no cause for alarm. It's about making people alert.
"Wales is a very safe place to live, Cardiff is a very safe place to visit. This is purely about being sensible and getting everyone aware of what they should be reporting and make them confident to do so when they feel uncomfortable."
If you have any concerns you can contact the Anti Terrorist Hotline on 0800 789 321.
The Secretary of State for Wales says the UK Government is determined to get a brexit deal that works for everyone.
Samata Ullah, 34, pleaded guilty to five terror offences, including membership of IS
A deal's signed in Swansea which it's hoped will help create thousands of jobs across South West Wales.
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