SAN JUAN, Puerto Rico (AP) — Puerto Rico's governor activated the National Guard on Tuesday to rush food, medicine and gasoline to the popular tourist islands of Vieques and Culebra following a major breakdown in transportation that critics say could have been avoided. The announcement came after cargo ferries that supply the two islands located some 20 miles (32 kilometers) east of Puerto Rico recently broke down, cutting an important lifeline to the roughly 11,000 people who live there...(snip) ...Just over five months ago, Rossello's administration rented four additional ferries and changed the departure point from Puerto Rico to the...