81.   If the bomb was made of a commercially available explosive, like dynamite, the investigators may have to look in other directions.

82.   If the cockpit tape is also in good condition, investigators will have crucial evidence of how the pilots assessed the emergency and whether their response was proper.

83.   IAB investigators had to suspend the use of concealed tape recorders for weeks last October when a two-month-old sting operation went awry.

84.   If a federal investigator had a relationship with an undocumented worker but had not committed a criminal offense, the board would carefully scrutinize the penalty.

85.   If their suspicion is confirmed, investigators will have another indication that the explosion that doomed the plane originated in that cargo hold.

86.   In addition to the one black box in hand, investigators Wednesday had another important piece of information that will help them understand what happened to the plane.

87.   In any case, Israeli investigators have yet to determine who sent Musa Ghneimat to set off a bomb in Tel Aviv last Friday.

88.   In an interview, Pence said he learned from an FBI briefing last week that investigators were having trouble scrutinizing possible foreign links because some countries were not cooperating.

89.   In most of the cases investigators have tips about suspects, but no witnesses who are willing to testify.

90.   In many of the cases, investigators have little more to go on than shreds of charred fabric or a boot heel.