OK! Exclusive: See a Brand New Clip From The Next Episode of USA's Sirens

Of all the professions in the world, EMT's have to be some of the most fearless people. But on this week's episode of Sirens on USA, some of Chicago's best heroes (albeit, fictional) open up about their fears.

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Check out the funny clip from this week's episode where they confess to fears as small as insects and as big as the Grand Canyon and be sure to tune in to one of the best new series on TV, tomorrow night on USA.

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Sirens airs Thursdays at 10 p.m. ET on USA.

Have you been watching Sirens? Who is your favorite character? What are you scared of? Tell us in the comments below or on Twitter @OKMagazine. 

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