There is a general threat from terrorism. Attacks could be indiscriminate, including in places frequented by foreigners. You should monitor media reports and remain vigilant at all times. There is considered to be a heightened threat of terrorist attack globally against UK interests and British nationals, from groups or individuals motivated by the conflict in Iraq and Syria. You should be vigilant at this time.
The US Department of Homeland Security provides public information about credible threats. For all current alerts within the United States and its territories, visit their website.