I happened to catch this person's picture on the website of Islamic Jihad's Saraya site as a "martyr."
He looked pretty young.
He was.
According to his obituary, Omar Salman Abu Mustafa was killed two months short of his 18th birthday, on October 24, 2004.
Mustafa had joined Islamic Jihad in 2002, when he was 15, and he joined their Saraya al-Quds unit in 2003 when he was 16.
He was killed along with his 30 year old brother in Gaza.
Mustafa was hardly unique.
Islamic Jihad is also celebrating the anniversary of the "martyrdom" of Saeed Muhammad Al-Najjar, killed on October 25 2004, the day after his 17th birthday. He joined Islamic Jihad at 13 and the Saraya brigades at 16.
Defense for Children-Palestine seems silent about this.