CAIRO – Pope Francis wrapped up a brief but deeply symbolic visit to Egypt on Saturday with an open-air Mass for the country’s tiny Catholic community, defying security concerns to show his support for the Christians of this Muslim majority Arab nation who have increasingly become targeted by Islamic militants. Military helicopters flew overhead and police fanned out in force as Francis zoomed around the soccer stadium in suburban Cairo where Mass was held, using an open-topped golf cart and waving to members of the congregation, evidence of his hallmark desire to be close to his flock at all costs. The crowd cheered him wildly, waving Egyptian and Holy See flags and swaying to hymns sung by church choirs.