The Dow Jones Industrial Average is falling Friday morning with shares of Exxon Mobil and Chevron seeing the biggest losses for the blue-chip average. The Dow /zigman2/quotes/210598065/realtime DJIA -1.39% was most recently trading 136 points, or 0.6%, lower, as shares of Exxon Mobil /zigman2/quotes/204455864/composite XOM -4.13% and Chevron /zigman2/quotes/205871374/composite CVX -4.18% are contributing to the index's intraday decline. Exxon Mobil's shares are off $0.99 (2.2%) while those of Chevron have dropped $1.92 (2.1%), combining for an approximately 20-point drag on the Dow. Also contributing significantly to the decline are Caterpillar /zigman2/quotes/203434128/composite CAT -1.87% , Boeing /zigman2/quotes/208579720/composite BA -3.78% , and Cisco /zigman2/quotes/209509471/composite CSCO +1.94% . A $1 move in any one of the 30 components of the benchmark results in a 6.86-point swing.