The al-qaeda members were sued under the US anti-terrorist act (ATA), including Omar's father, Ahmed.

Damages under the ATA are automatically tripled.

Breakdown was $31.5M to the Speer family ($1.5M lost wages, $10M pain/suffering, $20M to widow & kids

$5.2M sought by Morris and family - $2.7M awarded ($200K lost wages, $2.5M pain/suffering)

Triple these amounts and you get the $100M+ figure

Note that the posthumous pain/suffering amount to Speer is roughly equivalent to that received by Khadr.