In this morning's Atlanta Journal Costitution is the following head and subhead:
 
Study: Slow decisions hurt help for Marines
Tougher truck may have saved troops
 
I would say that the word might should have been used, since they were not saved.  May seems to me appropriate only if they were saved and one is speculating as to why.
 
Is that a correct assumption?  And could someone explain the differences between the two forms?
 
Jane Saral
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