While I understand that there has been evidence obtained that the phrase target practice was not used, I don't think that this makes the headline exaggerating. Using quotations may not actually indicate that the article is saying the officers used those specific words, but also could show that they are paragraphing a more complicated statement made by one of the officers. This is what I believe the quotation marks are there to do, which would then make the headline not misleading. Regardless, the sentiment behind the statement was clearly target practice, both of those words are used, and I don't think saying they "didn't use those terms" is a valid complaint, due to the fact that they are being paraphrased in the headline and it was clearly the sentiment and language being used.