If the hijackers ' demands are deemed too great and the perpetrators show no inclination to surrender, authorities sometimes employ armed special forces to attempt a rescue of the hostages ( notably Operation Entebbe ).

If the defense makes no attempt to put the baserunner out ( for example, if the catcher doesn't even look his way ), the play is scored as defensive indifference ( also called fielder's indifference ), and no stolen base is credited to the runner.

If a pair cannot hit downwards, they will use flat strokes in an attempt to gain the attack.

If we attempt to use the above formula to compute the derivative of f at zero, then we must evaluate 1 / g ′( f ( 0 )).

* If one team kicks the ball ; the other team has the right to recover the ball and attempt a return.

* If the offence fumbles ( a ball carrier drops the football, or has it dislodged by an opponent, or if the intended player fails to catch a lateral pass or a snap from centre, or a kick attempt is blocked by an opponent ), the ball may be recovered ( and advanced ) by either team.

If the team scores a touchdown, starting with the 2010 season, it is required to attempt a 2-point conversion.

If any blame or fault attaches to the attempt, it is mine alone.

If an eligible receiver on the passing team legally catches the ball it is a complete pass and the receiver may attempt to advance the ball.

If we do not attempt to look back at an event, the greater the interval time between the time when the event from happening and the time when we try to remember, the memory will start to fade.

If two fatwā are potentially contradictory, the ruling bodies ( combined civil and religious law ) would attempt to define a compromise interpretation that will eliminate the resulting ambiguity.

If we attempt to apply his rules to Palestrina's own music, we will find ample instances in which they have been followed to the letter, as well as many where they are freely broken.

Furthermore, the Mohist philosophical canon of the Mojing, compiled by the followers of Mozi ( c. 470-c. 390 BC ), provides the earliest known attempt to describe inertia: " The cessation of motion is due to the opposing force ... If there is no opposing force ... the motion will never stop.

If the desired output values are often incorrect ( because of human error or sensor errors ), then the learning algorithm should not attempt to find a function that exactly matches the training examples.

If a team does not attempt to score a field goal ( or the ball fails to make contact with the rim ) within 24 seconds of obtaining the ball, play is stopped and the ball given to its opponent.

If there is no decision on point from the highest court of a state, the federal courts must attempt to predict how the state courts would resolve the issue, by looking at decisions from state appellate courts at all levels.

If a vaulter achieves a miss on their first attempt at a height, they can pass to the next height, but they will only have two attempts at that height, as they will be out once they achieve three consecutive misses.

If the pole used by the athlete dislodges the bar from the uprights, a foul attempt is ruled, even if the athlete themselves has cleared the height.

If the vaulter fails to begin an attempt within this time, the vaulter is charged with a time foul and the attempt is a miss.

If an attempt is made to copy a reference with a weight of 1, we have to " get more weight " by adding to the total weight and then adding this new weight to our reference, and then split it.

But at the first lecture Adorno's attempt to open up the lecture and invite questions whenever they arose degenerated into a disruption from which he quickly fled: after a student wrote on the blackboard " If Adorno is left in peace, capitalism will never cease ," three women students approached the lectern, bared their breasts and scattered flower petals over his head.

If cutters cannot get open, the handlers swing the disc side to side in an attempt to reset the stall count while also getting the defense out of position.

If the ball is hit around, above, or through the block, the defensive players arranged in the rest of the court attempt to control the ball with a dig ( usually a fore-arm pass of a hard-driven ball ).

If he had married her, he'd have been asking for trouble.

If the bluff failed and they ran into trouble, Brannon had told the others, they would withdraw -- and he would come after his son another time.

If he wondered whether the attackers would allow him to pull away unmolested, he had his answer a moment later.

If the Union conceded this to them, the same right must be conceded to each remaining state whenever it saw fit to secede: This would destroy the federal balance between it and the states, and in the end sacrifice to the sovereignty of the states all the liberty the citizens had gained by their Union.

If any had escaped expulsion by hiding, they certainly would not frequent the market-place.

If a child had a single drop of Negro blood, he would revert to the ancestral line which, except as slaves under a superior race, had not made one step of progress in 3,000 years.

If he had been `` liquidated '' in some way, he would have become a martyr, a rallying point for people who shared his ideas.

If in any one calculation Ptolemy had had to invoke 83 epicycles all at once, while Copernicus never required more than one third this number, then ( in the sense obvious to Margenau ) Ptolemaic astronomy would be simpler than Copernican.

If you had screamed right there in the street where we stood, I could not have felt more fear.

If to be innocent is to be helpless, then I had been -- as are we all -- helpless at the start.

If Hammarskjold had not wanted the list disposed of in this manner, and if Bang-Jensen had not wanted it -- who had ordered it??

If Gorton wanted peace and quiet for his complicated meditations this is where he should have had it.

If his circumspection in regard to Philip's sensibilities went so far that he even refused to grant a dispensation for the marriage of Amadee's daughter, Agnes, to the son of the dauphin of Vienne -- a truly peacemaking move according to thirteenth-century ideas, for Savoy and Dauphine were as usual fighting on opposite sides -- for fear that he might seem to be favoring the anti-French coalition, he would certainly never take the far more drastic step of ordering the return of Gascony to Edward, even though, as he admitted to the English ambassadors, he had been advised that the original cession was invalid.

If this capacity had not failed them, they would see that their enemy has made a disastrous miscalculation.

If he had had a son, he would tell him, `` Gather ye rosebuds while ye may This same flower that smiles today tomorrow will be dying ''.

If he had any worries, it was only the small ones, about Mother in New York, and his daughter Edwina and what she might be doing at this hour, with her Aunt Asia, in Philadelphia.

If we had, then one of us would have had to go instead.

If he had income other than wages subject to withholding, he may be required to file Form 1040.

If our SAC bombers were, today, capable of surviving a surprise missile attack and because of infinite dispersion or long endurance had the capability to strike at Russia again, and again, and again, those bombers would unquestionably assure our military dominance.