Towards the end, DiNozzo asked McGee to help him put Calomine lotion on where he was itching because of the weed. The claim being that he couldn't reach. But he spread the stuff over his skin because he shook hands with the sniper. Therefore it came from his own hand. So he should be able to reach.
After McGee asks Bishop for the latest info on the Dubai attack when she is in MTAC watching the news updates, she says that news outlets are reporting 30 casualties but her intel puts the number at 43 with hundreds more injured. A casualty means someone that is either killed or injured in a particular incident. As she gives numbers for both the deaths and the injuries from the attack, she should have said fatalities, not casualties when specifically referring to the number of people killed.