What We Know About Mysterious Flying Objects Shot Down By US

The downing of a huge Chinese balloon off the US coast, followed by the shootdowns of two smaller objects over Alaska and Canada -- and another over Lake Huron on Sunday -- has raised concerns about North American security and further strained relations with China.
Here is what we know so far:

What were the four objects?

The drama began in late January, when a giant Chinese balloon -- dubbed a spy craft by US officials -- drifted for days through US skies before being shot down February 4 by an F-22 jet off the South Carolina coast. China insisted the balloon was conducting weather research.

The Pentagon said it had a gondola the size of three buses and weighing more than a ton; that it was equipped with multiple antennas, and had solar panels large enough to power several intelligence-gathering sensors.

Then Friday, US fighter jets downed another object off northern Alaska, the military said, adding it was "within US sovereign airspace over US territorial water." It lacked any system of propulsion or control, officials said.

On Saturday, a US F-22 jet, acting on US and Canadian orders, downed a "high-altitude airborne object" over Canada's central Yukon territory, about 100 miles (160 kilometers) from the US border, saying it posed a threat to civilian flight. Canada described it as cylindrical and smaller than the initial balloon. Canadian Defense Minister Anita Anand would not speculate on whether it originated in China.

On Sunday Biden ordered US warplanes to down an unidentified object over Lake Huron "out of an abundance of caution," a senior administration official said.

The object was described as an octagonal structure with strings hanging off it, and was not deemed to be a military threat to anything on the ground, but could have posed a hazard to civil aviation as it flew at about 20,000 feet (6,000 meters) Michigan, the official said.

US Senate majority leader Charles Schumer, who was briefed by the Biden administration following the incident over the Yukon, said Sunday -- before the Lake Huron incident -- that the previous two objects were likely balloons, "but much smaller than the first one," both flying at around 40,000 feet (12,200 meters).

Officials described the second and third objects as about the size of a Volkswagen Beetle.

Only the first object so far has been attributed to Beijing.

What has been recovered?

Military teams working from planes, boats and minisubs are scouring the shallow waters off South Carolina for the first object, and military images showed the recovery of a large piece of balloon. The Federal Bureau of Investigation is taking custody of the debris for analysis.

Operations to recover the second object continue on sea ice near Deadhorse, Alaska. "Arctic weather conditions, including wind chill, snow and limited daylight, are a factor," the military said.

Recovery teams -- backed by a Canadian CP-140 patrol aircraft -- are searching for debris from the third object in the Yukon, Anand said Saturday.

The Pentagon said the FBI is working closely with Canadian police.

No information was immediately available about recovery of the fourth object.

What was the objects' purpose?

US officials say images of the first balloon show it had surveillance equipment that could intercept telecommunications. US Defense Secretary Lloyd Austin said it was intended "to surveil strategic sites in the continental United States."

A former chair of the US Joint Chiefs of Staff, Michael Mullen, suggested China, or some in its military leadership, intentionally wanted to subvert an impending visit by US Secretary of State Antony Blinken.

The United States has said the balloons were part of a "fleet" that has spanned five continents. Some analysts say it may be the start of a major Chinese surveillance effort targeting foreign military capabilities ahead of possible acute tensions over Taiwan in coming years.

Why so many objects now?

Analysts said US and Canadian intelligence constantly receive huge amounts of raw data, and generally screened some out to focus on the threat of incoming missiles, not slow-moving objects like balloons.

"Now, of course, we're looking for them. So I think we're probably finding more stuff," Jim Himes, the top Democrat on the House Intelligence Committee, told NBC.

Officials have said three balloons are now known to have briefly overflown US territory during Donald Trump's administration -- undetected at the time -- and one earlier in Joe Biden's term.

What's the impact on US-China ties?

The United States scrapped Blinken's visit, intended to stabilize severely strained relations, and has sanctioned six Chinese entities believed to support military spy balloon programs.

Beijing denounced the first balloon's downing, saying it "seriously violated international practice." It reserved the right "to use necessary means to deal with similar situations."

There has been no Chinese reaction to the latest downings.

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