The Air Line Pilots Association (ALPA) -- which represents more than 74,000 pilots between 42 US and Canadian airlines, including majors like JetBlue, Delta, and United -- told members today its "working diligently" with carriers that fly to Israel to "ensure the safety of each of [its] members."

-ABC News' Amanda Maile

The White House has pledged assistance to Israel in responding to Hamas' attack -- and America has for decades maintained a vast pre-positioned military stockpile inside Israel.

First established in the wake of the Yom Kippur War of 1973, when it took time for the U.S. to send supplies to Israel, the munitions are available in case of emergencies.

It’s possible that Israel will ask the U.S. to tap into this stockpile, which contains weapons systems including tanks and ammunition stored in warehouses.

While not especially well known to the public, the supplies got some exposure earlier this year when the U.S. planned to use them in order to send artillery to Ukraine in responding to Russia's invasion.

-ABC News' Luis Martinez

Israeli rescue service Zaka said at least 260 bodies were removed from the venue of the music festival in southern Israel that came under a Hamas attack.

United Airlines said Sunday its Tel Aviv flights will remain suspended until conditions allow for them to resume.

The airline operated two scheduled flights out of TLV late Saturday and early Sunday.

"The safety of our customers and employees is our top priority," United said.

-ABC News' Amanda Maile

National Security Council spokesperson John Kirby avoided saying if the U.S. believed Israel's calls for civilians in Gaza to evacuate in the next 24 hours was possible but acknowledge that it was a "tall order" given how densely populated the area is.

"Well, I think we're going to be careful not to get into armchair quarterbacking the tactics on the ground by the IDF. What I can tell you is we understand what they're trying to do. They're trying to move civilians out of harm's way and giving them fair warning. Now, it's a tall order. It's a million people, and it's a very urban, dense environment, already a combat zone. I don't think anybody's underestimating the challenge here of affecting that evacuation," Kirby said in an interview on CNN Friday morning.

"But it's pretty clear that what they're trying to do is to the maximum extent possible avoid civilian casualties and also separate Hamas from the human shields. I mean, Hamas actually gave a counterorder telling Palestinians in Gaza to stay at home. Why? Because having human shields, they think, protects them," Kirby continued.

Asked about their efforts to secure a safe passage for civilians out of Gaza, Kirby reiterated that the U.S. is talking to Israel and Egypt but would not comment further on progress.

On the Rafah crossing specifically, Kirby said "So far it's still closed. But that doesn't mean were not going to still try as hard as we can to talk to the Israelis and Egyptians about getting it open and having some sort of safe passage out. It's important that we also continue to work to make sure that humanitarian assistance can get in. The United States has no intention of stopping our efforts to continue to deliver humanitarian assistance, but there has to be a path in, there has to be a path out."

Kirby had no update on the Americans who are believed to be held hostage in Gaza and could not confirm reports that 13 hostages have been killed by Israeli airstrikes, as Hamas has claimed.

-ABC News' Molly Nagle