US STOCKS-Indexes drop as global security worries intensify
* U.S. Q3 GDP growth revised to 2.1 pct from 1.5 pct
* Travel, leisure stocks fall after Turkey downs Russian jet
* Tiffany down after results
* Energy stocks rise with crude oil prices
* Indexes down: Dow 0.46 pct, S&P 0.42 pct, Nasdaq 0.39 pct (Updates to open, adds comment)
By Abhiram Nandakumar
Nov 24 (Reuters) - U.S. shares fell on Tuesday as investors turned to less-risky assets after Turkey shot down a Russian warplane, even as GDP data indicated healthier economic growth.
Global security concerns intensified after Turkey said it shot down a Russian warplane that had violated its airspace near the Syrian border, and after the U.S. State Department issued a global travel alert for Americans.
Crude oil prices were up about 2 percent on the prospect of more turmoil in the Middle East. Gold also rose. Continuación...