Boeing is lifting the company’s retirement age for CEO David Calhoun, potentially allowing him to lead the troubled aircraft builder for several more years. Boeing said Tuesday that its board pushed the standard age-65 retirement age to 70 for Calhoun, who is 64. At the same time, the company announced that its 54-year-old chief financial officer will retire in July. Greg Smith has been with Boeing for 30 years. The announcement comes as Boeing conducts it annual meeting online. Shareholders voted to re-elect all members of Boeing board, even though a shareholder advisory firm has recommended against two of them.