This is where armed police officers are being deployed across Wales.
Welsh Scientists Head-Up Dementia Study
Welsh scientists are leading the way in new dementia research.
Dr John Gallacher from Cardiff University's School of Medicine will head-up the Medical Research Council's new UK Dementias Research Platform.
He said the study will focus on the whole body, not just the brain.
"Inflammation or infection in a completely different organ may be related to the development of dementia or to accelerating the onset in people with the disease.
"So it's imperative that we look at the different stages of disease development: people who are yet to develop dementia; those who are known to be at risk of developing it, and those who are already in the early stages of the disease".
The UKDP will see the largest group of participants in dementia research, using more than 2 million volunteers over 50.
It'll investigate causes of the disease, looking at different conditions like Alzheimer's, Parkinson's and motor neurone disease.
It’ll also look at links bewteen it’s development and other factors like diet or illness.
The study will be formed by teams from eight UK universities, including Cardiff and Swansea.
An investigation by Heart has uncovered a drop in the number of armed police officers in Wales.
This is how police forces in Wales are responding to the terror threat being raised.
Police say their plans for the Champions League final in Cardiff have not changed following the Manchester terror attack.
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