to places you never thought you'd go. this, is why we travel. and why we continue to create new technology to connect you to the people and places that matter. officials are urging americans to be extra cautious this july 4th following the horrific terror attack that killed at least 38 people at a tunisian beach resort on friday. isis claimed responsibility for the attack. as many as 30 victims are believed to be british nationals. u.s. officials say there's no specific terror threat but are urging americans to be vigilant because of the obvious target of america's birthday as well as spread of isis on social media. joining me now is msnbc, thanks