Hasan is representing himself during his court martial at Fort Hood. Col. Tara Osborn Wednesday told him he should not provide testimony during the jury selection process, saying he should use statements like "If the evidence shows I'm the gunman," KWTX-TV in Waco reported.
"It doesn't satisfy me, but I do," Hasan answered when Osborn asked him if he understood what she had told him.
If he is convicted of killing 13 people and wounding many more in 2009, Hasan faces either a death sentence or life imprisonment. He has suggested his actions were justified because of U.S. operations in Afghanistan and asked potential jurors what they know about Islamic law.
Ten people were selected for the jury Wednesday. Six more prospective jurors will be brought in for questioning Monday as Osborn tries to find a jury of 13.
The court martial is scheduled to begin Aug. 6.