WASHINGTON (AP) 鈥 With few confirmed details from President Joe Biden鈥檚 White House, the downing of three unknown aerial objects in as many days by U.S. fighter jets has prompted wild speculation about what they were and where they came from. It even fell to his press secretary on Monday to announce earnestly there was no indication of 鈥渁liens or extraterrestrial activity.鈥

The president had no public events Monday and has offered little reassurance or explanation of what to make of it all, following the discovery of a Chinese spy balloon crossing the country and the unprecedented peacetime shootdowns that have followed.

U.S. officials said they still know little about the three objects downed Friday , Saturday and Sunday over Lake Huron. But those shootdowns have been part of a more assertive response to aerial phenomena following the balloon episode blamed on an ongoing Beijing .

White House press secretary Karine Jean-Pierre did have at least one definitive statement to try to tamp down unrestrained theories: 鈥淚 know there's been questions and concerns about this, but there is no 鈥 again, no 鈥 indication of aliens or extraterrestrial activity.鈥

The U.S. government insists the three objects did not pose a threat to American security and that even the massive spy balloon provided 鈥渓imited additive capabilities鈥 to China's other surveillance programs. Still, they were shot out of the sky 鈥渙ut of an abundance of caution,鈥 好色tv Security Council spokesman John Kirby said.

Biden鈥檚 unparalleled decision to shoot down four objects over North America in eight days 鈥 when combined with U.S. officials鈥 efforts to publicly downplay the foreign threat 鈥 has furthered the dissonant messages being sent about sensitive efforts to protect the homeland.

U.S. officials, speaking on the condition of anonymity to discuss internal deliberations, acknowledge the confusion, saying the administration wants to keep the American public from becoming unnecessarily worried while also trying to maintain a tough posture toward China.

Kirby said that while the U.S. has no specific reasons to suspect the aerial objects were spying, "we couldn鈥檛 rule that out.鈥 He added that the most recent objects, flying between 20,000 and 40,000 feet, could have posed a remote risk to civilian planes.

That legal justification for the downings 鈥 that the objects might imperil civilian flight 鈥 is viewed by some officials as such a remote possibility that it raises questions about whether it was a mere pretext for acting tough.

Biden 鈥渨ants to appear tough on China, and this is a good example of where actions speak louder than words,鈥 said Brian Ott, co-author of 鈥淭he Twitter Presidency: Donald J. Trump and the Politics of White Rage.鈥

鈥淚f we find ourselves next year in a presidential debate between the two of them, Trump will try to cast Biden as weak on national security, and Biden will be able turn to Trump and say, 鈥楬ow many of these Chinese balloons and unidentified objects did you shoot out of the sky?鈥欌

Ott, a professor of communications at Missouri State University, said Biden鈥檚 relative silence on the takedown of the Chinese balloon and other objects could be guided, at least in part, by his 2024 reelection considerations. Republicans, from Senate Minority Leader Mitch McConnell to right-wing firebrand Rep. Marjorie Taylor Greene, criticized Biden in the days after the Chinese balloon was spotted in U.S. airspace for being slow to act.

When pressed on whether the decision to shoot the objects down came in response to such criticism, Kirby insisted, 鈥淭hese were decisions based purely and simply on what was in the best interests of the American people.鈥

With little information to go on, senators in both parties demanded answers as they returned to Washington on Monday.

Senate Majority Leader Chuck Schumer announced that senators would receive a classified briefing Tuesday morning and that Congress would work in coming weeks to get the 鈥渇ull story of what happened.鈥 Illinois Sen. Dick Durbin, the No. 2 Democrat behind Schumer, said Biden 鈥渙wes the country some answers.鈥

Republican McConnell said Biden 鈥渘eeds to communicate and level with the American people." He questioned what the administration knew about China鈥檚 surveillance efforts before the first balloon crossed the country.

After the balloon was shot down, the White House revealed that such balloons had traversed U.S. territory at least three times during Trump鈥檚 administration unbeknownst to the former president or his aides 鈥 and that others have flown over dozens of nations across five continents. Kirby emphasized Monday that they were only detected by the Biden administration.

Jim Ludes, a former national defense analyst who now leads the Pell Center for International Affairs and Public Policy at Salve Regina University, said political parrying is inevitable.

鈥淚t doesn鈥檛 matter what the administration says. People are going to play politics with it and try to score points," he said. 鈥淓ither they acted too slowly, or too hastily.鈥

There鈥檚 good reason for the Biden administration to be cautious, Ludes added, noting that the blow-up over the aerial devices comes amid heightened tensions between China and Taiwan. The wrong statement from Biden could destabilize an already fraught situation.

鈥淣ext time we fly a B-52 down the straits, what does China do?鈥 Ludes said. 鈥淭here are opportunities for this to become very complex very quickly.鈥

Kirby on Monday sought to draw a distinction between the latest objects and the confirmed surveillance balloon, emphasizing their far smaller size, lack of maneuverability and the lack of any indication they were communicating before they were shot down. They were only detected, he said, because the U.S. had adjusted the sensitivity on air defense radars to detect high-flying, slow-moving objects like the surveillance balloon.

Officials have yet to retrieve any parts of the three unidentified objects, Defense Secretary Lloyd Austin said, citing the treacherous terrain, water and weather where they were brought down. U.S. officials could not even say whether they were balloons or some other type of aerial vehicle, and have thus far declined to share imagery taken before they were shot down.

All that is clear, it seems, is that it wasn't ET.

Kirby echoed Jean-Pierre on that: 鈥淚 don鈥檛 think the American people need to be worried about aliens with respect to these craft."

___ AP writers David Klepper and Tara Copp contributed.

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