At least 34 people were killed, and about 200 injured, during terrorist attacks early this morning in Brussels' airport and subway system. Thousands of miles away, the NYPD has responded by beefing up security across the city, deploying counterterrorism teams to crowded areas and the mass transit system.

Speaking with reporters this morning, Mayor de Blasio emphasized that there's currently no known connection between the attacks and New York City, and no credible or specific threat against the city, but that the city will remain in a state of heightened awareness and security for days to come.

"We in New York City stand ready to fight against terror in any way," de Blasio said, adding that New Yorkers should "expect to see extraordinary NYPD presence out over the coming days as a sign of our readiness to protect people at all times."

When reports came in from Belgium at about about 3:30 a.m. this morning, the NYPD put its counterterrorism teams into action, doubling the number of counterterrorism officers across the city during the morning rush hour. That included Hercules counterterrorism teams, special weapons teams, and K9 units, according to Deputy Commissioner of Intelligence and Counterterrorism John Miller.

Coincidentally, today also marks the deployment of 50 additional officers to the Times Square subway station. On top of that, Penn Station and Grand Central saw an influx of state troopers today, and the Port Authority heightened its police presence at all of its airports, bridges, and tunnels, as well as the World Trade Center and the PATH and Port Authority Bus Terminal.

Subway and rail stations in NYC, Westchester, and Long Island will also have extra security, and the National Guard has increased its officer presence at JFK and LaGuardia airports. Belgium-affiliated locations throughout the city, such as the Consulate General in Midtown, are also receiving additional security in the days to come.

Officials at this morning's press conference seized the latest terrorist attack as an opportunity to denounce proposed cuts to federal funds that go toward the city's anti-terror efforts: under the current proposal, federal anti-terror funds going to New York City would be cut in half, by $90 million. Commissioner Bratton cited a number of NYPD initiatives, such as the Domain Awareness System, radiation detection, license plate scanners, and camera systems—not to mention high-paid counterterrorism analysts—that would not be possible without the current level of federal funds.

"I don't think it's fully understood just how dependent we are on the partnership with the federal government and the funding they've provided since 9/11, and the concern this year of the cuts...is that it goes to the heart and soul of how we function," Bratton said. "We'll remain optimistic, particularly in light of what's going on in the world today, that those cuts will be restored...those cuts could be very devastating if they were to occur."

Bratton said that whenever another horrific attack like this occurs, it does give the department an opportunity to adjust its counterterrorism strategy. For example, these attacks in Brussels, like those in Paris in November and last January, comprised multiple events occurring in quick succession. As such, the NYPD is focusing its strategy on preventing and responding to instances of multiple attacks. For example, if there were a terrorist attack on one subway line or in a certain station, he said, police would shut down the subway system entirely, as they would be concerned about another transit-related attack.

"Better to err on the larger shutdown and then reduce it, rather than start small and, God forbid, you miss something," Bratton said.

One of this morning's attacks in Beligum took place in Brussels's Maelbeek metro station, where an explosion killed at least 20 people. At the capital's airport, there were two explosions in the departure hall, one of which is believed to have been a suicide bombing. Those explosions killed at least 14 people. ISIS has claimed responsibility for the attacks, and Brussels has suspended all flights in and out of the airport, and shut down its subway system, with the prime minister encouraging residents to "avoid all movement." The European Union Complex is also on lockdown.

The past 10 days have also seen terrorist attacks in Côte d’Ivoire, Yemen, Nigeria, and Turkey.

Diego Rodriguez, the assistant director of the FBI's New York field office, was adamant that there is no reason to panic over a potential attack in NYC right now.

"The FBI's New York field office is unaware of any specific credible threat to our area at this time," he said. "We remind the public not to let fear become disabling."