 Police around the country stepping up security this Fourth of July holiday. The F.B.A. warning conflicts overseas is also raising the threat of possible violence here. After battering Jamaica, Hurricane Beryl targeting Cancun, Tulum and other areas of Mexico's Yucatan Peninsula. Forecasters say Beryl has weakened but could strengthen again as it hits the warm Gulf waters toward Texas. And extreme heat, the concern in the southwest and western states. Triple digit temperatures could break records. This is ABC News. The risk is low.