I Do not get it? As far as i am aware, Exit seats can not be assigned to people who can not help if the plane face an emergency situation ... There are rules for passengers who could be seated there (spoken language & ability to understan, communicate, guide others, heath, age, ......). So, how it is possible incounter twice in 3 month a situation where exit seats were given to aged couples who can barely stand straight. If we consider the logic , ... and the safety of those couple + the safety of the others I do not think I might understand how could this happenin staff !