When Salman Khan is lifting the axe to hit the wolf you can see two legs behind.
When Shenoy receives the call from Tiger (from Greece) it is clearly shown as midnight at New Delhi. The actual time at Greece would be 8:30 PM (The time of sunset). However Tiger is shown to be calling from full daylight.
When Shenoy receives the telephone call to tell him of the outcome of the mission, he holds the phone upside-down. The speaker grille and blinking blue message LED can be seen near his chin.
The language of the blueprint of the hospital, is shown as English, whereas normally it is entirely Arabic.