The Army helicopter that collided with a passenger plane above the Potomac River boasted an experienced crew doing “an unforgiving job.” Friends and relatives are still baffled and mourning their loss.

More than a week after the deadly collision of a passenger jet and a helicopter, crews forged ahead with salvage efforts in the Potomac River.

Newly released data from ground-based radar came out Tuesday suggesting an Army helicopter was higher than it was supposed to be when it collided with American Airlines Flight 5342 a week ago, killing all 67 people aboard both aircraft.

Data confirmed that the air traffic controller alerted the helicopter to the presence of the CRJ-700 about two minutes before the crash.

The Army pilots were juggling dark skies, low altitude, a busy airspace and a cockpit without certain traffic detectors before the helicopter’s midair crash with a regional passenger jet.

In an update on Tuesday, officials say that transcriptions for both aircrafts cockpit voice recordings are ongoing.