 Shares of Boeing Co. BA, -1.94 and Honeywell International Inc. HON, -0.89 dropped around 0.3 each in the late session Tuesday following news that the U.S. Army has grounded its entire fleet of Chinook helicopters due to risk of engine fires out of an abundance of caution, The Wall Street Journal reported. Army officials said they know of a few engine fires involving the helicopters, resulting in no injuries or deaths. 