What we will never know is how many other hijackings and tragedies there would have been had we not tightened airport security and required carryon baggage checks. deterrents which work. Sunday before last a bomb blast rocked a foreign consulate in Los Angeles. heavily damaging It and bringing to our mind once again the senseless rash of bombings which occurred across the Nation several years ago. A mass murder trial in Houston has revealed countless horror stories of torture and slayings. A similar episode in California several years ago disclosed the murder of over 20 migrant laborers. These both received national press attention. But. how many other murder trials go unnoticed by the majority of us?