U.S. Army Stryker vehicles roll down a highway in Riga, Latvia, on Sunday, March 22, 2015, as part of Operation Dragoon Ride. The exercise took place amid ongoing tensions between NATO and Russia. (AP Photo/Oksana Dzadan, File)

Operation Dragoon Ride is underway, and its purpose seems clear: Show the world some of the firepower the United States and its NATO partners have in Eastern Europe.

The exercise was conceived by Lt. Gen. Ben Hodges, the commanding general of U.S. Army Europe. It launched long convoys of armored Stryker vehicles from Estonia on Saturday that will make their way across Latvia, Lithuania, Poland, the Czech Republic and Germany. Other groups of U.S. soldiers left from bases in Lithuania and Poland, with the three groups of troops meeting next week at Rose Barracks in Vilseck, Germany, Army officials said.

The exercise comes as hostilities continue to simmer in the region. Russia annexed Crimea one year ago last week, and continues to send arms and equipment to separatists fighting in eastern Ukraine against the government in Kiev, U.S. and Ukrainian officials say. Officials in Washington announced this month that they would send unarmed drones, Humvees and other equipment to Kiev, but thus far have declined to send lethal aid.

[Checkpoint: U.S. to send Humvees and unarmed drones to Ukraine — but still no weapons]

A dragoon is a mounted soldier or cavalryman. The operation includes soldiers from the Army’s 3rd Squadron, 2nd Cavalry Regiment, which calls itself the Dragoons and has headquarters in Vilseck, Germany. In addition to the show of force, the operation is designed to have the military interact regularly with civilians across Europe and provide reassurance that the United States is nearby if needed.

It also includes a strong social media component. Here’s Hodges talking on a hand-held video camera about the mission Monday in Lithuania:

Here are other photos of the ride over the last couple days:


U.S. soldiers of the 3rd Squadron, 2nd Cavalry Regiment, drive Stryker vehicles to a meeting in Bialystok, Poland, on Tuesday, March 24, 2015. EPA/ARTUR RESZKO

People take photos with U.S. soldier in Kosciuszko Market Square in Bialystok, Poland, on Tuesday, March 24, 2015, as Operation Dragoon Ride continues. (AP Photo/Alik Keplicz)

People gather around a U.S. Army Stryker vehicle in Bialystok, Poland, on Tuesday, March 24. REUTERS/Marcin Onufryjuk Agencja Gazeta

Soldiers of the U.S. Army’s 3rd Squadron, 2nd Cavalry Regiment, arrive during the “Dragoon Ride” exercise in Vilnius, Lithuania, on March 22, 2015. AFP PHOTO / PETRAS MALUKASPETRAS MALUKAS/AFP/Getty Images