Five people were killed after a rescue helicopter crashed in Iran's western province of Chaharmahal and Bakhtiari on Monday.<br />''<br />''<span style="color: #222222;">Iran's state TV reported The helicopter was trying to airlift a pregnant woman, but did not make it to her location. Iran's emergency medical services head Pirhossein Koulivand said among the five aboard were three flight crew and two rescue workers.</span><br />