Amid controversy over the use of drone aircrafts in the United States, the U.S. military said Sunday, it has removed information about air strikes in Afghanistan from monthly air power summaries, according to NBC News.

U.S. Central Command said in a statement that the data was removed because it was “disproportionately focused” on armed drones, with the data being published only when strikes occurred. However, only three percent of missions were of this nature–most being for reconnaissance, NBC News reported. Air Force chiefs began posting drone data last October to provide more information about drone usage in Afghanistan, according to The Air Force Times.

The recent debate over drones was sparked in part by President Barack Obama’s choice to nominate his chief counter-terrorism adviser John Brennan, an architect of the drone campaign, as the new director of the CIA. Brennan was sworn into office after Sen. Rand Paul (R-Ky.) attempted to block a vote on the nomination with a 12-hour filibuster.

READ MORE: NBC NEWS