An admitted terrorist told a Chicago jury he’s not proud of his role in planning the 2008 attacks in Mumbai, India that killed more than 160 people.

David Headley is to the point in his testimony where he’s being cross-examined by defense attorneys for Tahawwur Rana. Rana is a Chicagoan who is accused of helping Headley plan the Mumbai attacks.

Rana’s attorney, Patrick Blegen, asked Headley Thursday how he felt about killing innocent people. Headley said he’s OK with it if it’s in retaliation. Later in his testimony, Headley said he’s no longer proud of his role in the attacks.

Blegen framed that questioning around a long car ride Headley and Rana took together in 2009 that was secretly recorded by the feds. Blegen painted the mood as jovial. The two were singing a song about love and romance from a childhood movie they both liked and they laughed at ideas of more attacks that Headley said weren’t realistic, like against India’s film industry.

Prosecutors portrayed the same conversation as a much darker moment, foreshadowing more terrorist plots still to come.