In their efforts to deflect criticism of drone warfare, President Obama and senior officials overseeing strikes in Pakistan and Yemen have repeatedly insisted that missiles are only fired when there is minimal risk to civilians and that the primary virtue of this weapons system is its precision.

This week, after Rafiq Rehman and his two children came all the way from Waziristan to testify before Congress on the impact of drone warfare, only five lawmakers bothered to show up. The assumption among campaigners seems to have been that the consciences of ordinary Americans would be stirred if they were to hear children describe what it’s like witnessing your 67-year-old grandmother getting blown up in a drone strike.

The death of Momina Bibi exactly a year ago illustrates how little value precision has if the target is a nameless figure on a computer screen. Yet the testimony of the Rehman family seems unlikely to have much impact on public opinion when Washington finds it so easy to ignore.

Al Jazeera reports:

[E]ven after what his family has been through, Rafiq Rehman said he does not resent the United States. In fact, even after witnessing his first Halloween weekend in the States, he does not believe all that much separates him from Americans.

“It’s very peaceful here. For the most part, there’s a lot of freedom and people get along with each other. They’re nice, they respect each other, and I appreciate that,” Rafiq told Al Jazeera.

“We’re all human beings,” he said. “I knew that Americans would have a heart, that they would be sympathetic to me. That’s why I came here — I thought if they heard my story, they would want to listen to me and influence their politicians.”

The attitude of the Obama administration seems to have been reflected in the decision to prevent the family’s lawyer, Shahzad Akbar, from accompanying them on their visit.

Akbar, a legal fellow with Reprieve, the U.K.-based advocacy organization that helped bring the family to the Washington, believes that his work has something to do with the denial. He only had trouble obtaining a visa after he started to litigate on the behalf of drone victims.

In an interview at his Islamabad office, Akbar told me that he was first denied entry to the United States in 2010, even though he had an open visa at the time. He said that the head of visa services at the U.S. embassy in Islamabad told him his visa could not be processed there because of his history. “And I looked at her and I said what do you mean by history? She just smiled and she said, ‘You know very well what I mean by history.’”

He assumes she was referring to his decision that year to sue the CIA station chief in Islamabad. “It’s very simple,” Akbar said. “You mess with [the] CIA and they mess with you to the extent they can.”

Even if Akbar had been there and even if the hearings had been well attended, I suspect that many lawmakers and other Americans would find it easy to marginalize the Rehman family’s experience.

America never tires of expressing its good intentions. We mean well. Accidents happen. Momina Bibi’s death was a mistake.

This month the Obama administration decided to release more than $1.6 billion in military and economic aid to Pakistan and in what looks like a rather transparent quid pro quo, the Pakistani government today issued a statement drastically reducing its claims about the number of civilians killed in drone attacks.

They now say that since 2008, 2,160 militants and 67 civilians have been killed.

There was no indication why the new data seem to differ so much from past government calculations and outside estimates.

A U.N. expert investigating drone strikes, Ben Emmerson, said this month that the Pakistani Foreign Ministry told him that at least 400 civilians have been killed by drone attacks in the country since they started in 2004.

Emmerson called on the Islamabad government to explain the apparent discrepancy, with the Foreign Ministry figure indicating a much higher percentage of civilian casualties.

The Bureau of Investigative Journalism, based in London, has estimated that drones have killed at least 300 civilians in Pakistan since 2008, while the Washington-based New America Foundation puts the figure at 185 civilians. Such estimates are often compiled from news media reports about the attacks.

Having made drone warfare one of the signatures of his presidency, Barack Obama’s level of comfort in utilizing this form of technology can be seen both through his willingness to joke about it, and his insistence on its judicious use. In his mind, the drone has somehow been turned into a symbol of restraint. Shock and awe has been replaced by carefully calibrated violence — even while it employs the far too infrequently cited brand: Hellfire.

The propaganda campaign the Obama administration has engaged in — now with the collusion of the Pakistani government — has always been a numbers game. It attempts to justify drone warfare on the basis of its supposed efficiency. Through a false equivalence — that drone strikes kill far fewer people and do less damage than air strikes — the drone is cast as the lesser of two evils. (This is a false equivalence because drone strikes are rarely employed as an alternative to an air strike. The 317 drone strikes in Pakistan Obama has authorized could not have been substituted by 317 air strikes.) And the measure of the drones’ success can be reduced to a numerical formula such as the one Pakistan just produced.

The effect of claiming that “just” 67 civilians have been killed (leaving aside the issue that this number is implausibly low) is that it masks the wider effect of drone warfare: that it has terrorized the populations in the areas where its use has become prevalent.

A reporter for the Washington Post interviewed a journalist in Pakistan and tried to get a sense of the psychological impact of drones. Was it, she asked, like living somewhere where there are lots of drive-by shootings? (Fear of random acts of violence might usefully offer some common ground, though the comparison might be a bit more realistic if one imagines a neighborhood where the shooters are armed with shoulder-launched missiles rather than handguns.)

Kiran Nazish describes what the presence of drones really means: that the fear of sudden death becomes ever-present.

Along with the few victims that Washington acknowledges, there are thousands more. Facing the risk of missile strikes, these are people afraid to go to market or to leave their own homes. And when the sky is blue, the danger rises, as high above, unseen but constantly heard, drones circle like vultures in search of their prey.

Powerless and with nowhere to flee, for the living victims of drone warfare, America has become an invisible and blind executioner.