TEL AVIV, Israel — Noam Tibon was swimming in the Mediterranean Sea on Oct. 7 when he heard sirens, followed by an alarming text message: Hamas militants had infiltrated his son's community in southern Israel.
He told his son to lock himself in a safe room. Then Tibon, a retired major general in Israel's army, grabbed his pistol, hopped in his car — and drove south from Tel Aviv, making phone calls along the way.
