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The US Supreme Court yesterday denied a petition to review a case involving the National Security Agency's surveillance of Internet traffic, leaving in place a lower-court ruling that invoked "state secrets privilege" to dismiss the lawsuit.

The NSA surveillance was challenged by the Wikimedia Foundation, the American Civil Liberties Union, and the Knight First Amendment Institute at Columbia University. The Supreme Court's denial of Wikimedia's petition for review (formally known as "certoriari") was confirmed in a long list of decisions released yesterday.

"As a final development in our case, Wikimedia Foundation v. NSA, the United States Supreme Court denied our petition asking for a review of the National Security Agency's (NSA) mass surveillance of Internet communications and activities. This denial represents a big hit to both privacy and freedom of expression," the Wikimedia Foundation said yesterday.

Enlarge (credit: Andrea Nissotti / EyeEm)

On Saturday afternoon, US jets intercepted the Chinese surveillance balloon as it was leaving the continental US. Live footage of the event shows contrails of aircraft approaching the balloon, followed by a puff of smoke that may indicate the explosion of some ordnance near the balloon's envelope—a reporter is heard saying "they just shot it" in the video embedded below. The envelope clearly loses structural integrity shortly afterwards as it plunges towards the ocean. Reportedly, the events took place near Myrtle Beach, South Carolina.

Here's video of it being shot down near Myrtle Beach via Katie Herrmann #ChineseSpyBalloon pic.twitter.com/KmT9rL2bR7

— Brad Panovich (@wxbrad) February 4, 2023

Shortly afterwards, the US Department of Defense (DOD) released a statement attributed to its Secretary, Lloyd J. Austin III, that confirmed the interception was performed by US fighter jets on the order of President Biden. The DOD identifies the hardware as a "high altitude surveillance balloon," and says that the President authorized shooting it down as early as Wednesday. The military, however, determined that this could not be done without posing a risk to US citizens, either due to debris from the balloon itself, or from the ordnance used to destroy it.

As a result, the military waited until the balloon was far enough offshore to no longer pose a risk to land, but close enough that it would fall within US territorial waters, ensuring that the country would be the first to recover any hardware that survived the plunge into the sea. Secretary Austin also thanked Canada for its assistance in tracking and intercepting the balloon through the countries' cooperative North American defense organization, NORAD.

Enlarge / A bathroom on an Airbus A321neo. (credit: Getty | Nicolas Economou/NurPhoto)

The US Centers for Disease Control and Prevention is considering blending sewage sampling from airplanes into its wastewater surveillance system, which has proven useful for monitoring the spread and prevalence of a variety of pathogens, particularly SARS-CoV-2.

Amid the pandemic, the CDC launched wastewater testing programs across the nation, trying to get ahead of SARS-CoV-2 surges. Viral particles are often shed in fecal matter and can be an early indication of an infection. The fecal focus has proven useful for sniffing out community-wide transmission trends and disease spread for not only COVID-19 but also other recent outbreaks as well, namely polio and mpox (formerly monkeypox). Adding surveillance from airplanes and airports could flush out yet more information about infectious disease spread, such as global travel patterns and the debut of novel viral variants.

A study published last week in PLOS Global Public Health found such sewage surveillance in UK airport terminals and airplanes was effective at tracking SARS-CoV-2 among international travelers. Overall, the surveillance data suggested that it is a "useful tool for monitoring the global transfer rate of human pathogens and other disease-causing agents across international borders and should form part of wider international efforts to monitor and contain the spread of future disease outbreaks," the authors, led by Kata Farkas of Bangor University, concluded.