The Dow Jones Industrial Average is climbing Tuesday morning with shares of Salesforce.com Inc. and Chevron delivering strong returns for the blue-chip average. Shares of Salesforce.com Inc. CRM, +4.07% and Chevron CVX, +2.11% are contributing to the blue-chip gauge’s intraday rally, as the Dow DJIA, +0.33% was most recently trading 103 points (0.3%) higher. Salesforce.com Inc.’s shares have gained $7.49 (3.1%) while those of Chevron are up $1.79 (2.0%), combining for an approximately 61-point boost for the Dow. Dow Inc. DOW, +1.34%, Caterpillar CAT, +2.60%, and JPMorgan Chase JPM, +2.19% are also contributing significantly to the gain. A $1 move in any of the index’s 30 components results in a 6.58-point swing.