Rapid Unscheduled Disassembly :)

The Spacex satellite launch was good but the stage 1 booster landing failed.

Tweets…
Elon Musk @elonmusk

Ascent phase & satellites look good, but booster rocket had a RUD on droneship 10:04 AM – 15 Jun 2016

Elon Musk @elonmusk

Looks like thrust was low on 1 of 3 landing engines. High g landings v sensitive to all engines operating at max. 10:06 AM – 15 Jun 2016

Elon Musk @elonmusk

RUD = Rapid Unscheduled Disassembly :)
10:07 AM – 15 Jun 2016

Elon Musk @elonmusk

Upgrades underway to enable rocket to compensate for a thrust shortfall on one of the three landing engines. Probably get there end of year. 10:14 AM – 15 Jun 2016