By Lester Holt, NBC News anchor
We're juggling a number of major stories today, including that church shooting in Knoxville, Tennessee where a gunman burst into a children's program and opened fire. At least one person is dead, and several others have been badly hurt. All of the victims are adults. NBC's Michelle Kosinksi will be there for us tonight to report the latest.
At this moment, we're also getting news bulletins out of Istanbul, Turkey, where bomb attacks have killed or injured more than two dozen people in a shopping district. We'll have the latest on this story as well.
A fast moving wildfire near California's Yosemite National Park has now claimed over 16,000 acres and 2,000 homes are at risk. Chris Jansing is working on that.
In politics, Barack Obama is back on US soil, but the flash point between the himself and John McCain continues to be over Iraq, on whether the surge was in fact a good idea. John McCain pressed the attack today, as the subject turned to Obama's patriotism. NBC's Kevin Corke is on top of that for us.
We'll also check in with our NBC producer on the ground in Tehran, about Brian William's exclusive interview tomorrow with President Ahmadinejad, and the timing of Iran's disclosure that it has more centrifuges for uranium enrichment than it has previously reported.
I'll see you later on NBC Nightly News.