The Dow Jones Industrial Average is falling Friday morning with shares of Dow Inc. and Caterpillar facing the biggest setback for the blue-chip average. Shares of Dow Inc. /zigman2/quotes/203121064/composite DOW -1.83% and Caterpillar /zigman2/quotes/203434128/composite CAT -1.02% are contributing to the blue-chip gauge's intraday decline, as the Dow /zigman2/quotes/210598065/realtime DJIA -0.56% was most recently trading 84 points (0.3%) lower. Dow Inc.'s shares have declined $0.65, or 1.2%, while those of Caterpillar have dropped $1.38, or 0.9%, combining for a roughly 14-point drag on the Dow. Also contributing significantly to the decline are Exxon Mobil /zigman2/quotes/204455864/composite XOM -1.27% , Intel /zigman2/quotes/203649727/composite INTC -1.68% , and Chevron /zigman2/quotes/205871374/composite CVX +0.15% . A $1 move in any of the Dow's 30 components equates to a 6.78-point swing.