From the article:
The unintentional deaths, according to previously unreleased administration figures, came in a total of 473 CIA and military counterterrorism strikes between 2009 and the end of 2015. Those attacks, it said, killed between 2,372 and 2,581 “combatants” in countries where the United States is not at war.
Although it did not name the countries, they include Pakistan, Yemen, Somalia and Libya.
Noncombatant civilian deaths (I find the term “collateral damage” to be abhorrent, except when applied to buildings or infrastructure) are always unfortunate, to say the least, and tragic to the families involved. However, look at the numbers: 473 strikes, 2372-2581 combatants killed, and only 64-116 noncombatants. For any wartime operation, those figures are actually quite remarkable. The figure that is missing is the number of local non-combatants killed by the enemy combatants, only because they didn’t practice religion in the way that the combatants wanted.
By contrast, I was watching a documentary on WWII in the Pacific last night, including coverage of the battle to take Manila. Casualty figures there were approximately 1,000 U.S. troops killed, approximately 7,000 Japanese troops killed, and approximately 1,000,000 Filipinos killed, mostly by the Japanese.
The writer’s inclusion of “combatants” in scare quotes, and the statement of "in countries where the United States is not at war are disingenuous. We may not be at war with the countries of Pakistan, Libya, Somalia, and Yemen, but we are at war with entities operating within those countries.