Emergency services at the scene of explosions at Zaventem airport near Brussels, Belgium, March 22, 2016.
Francois Lenoir | Reuters
U.S. stocks reversed earlier losses that came on Tuesday after a series of deadly terrorist attacks struck Brussels. As the details of those tragic events unfold, CNBC's Bob Pisani explains how investors should react.
The attacks in Belgium, in particular, have focused attention on airlines and other travel-related stocks.
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