The members of Sector A are Amish and don't believe in 2x4 technology or violence. Not much happens to their sector. They live in the country and are the only sector that uses real names. Their only operatives are Numbuh Jebadiah, Numbuh Rebecca and Numbuh Ezekiel. In Operation: A.M.I.S.H., Numbuh 2 gets sent to stay with them, where he finds out that they don't have a grown tree house. When Numbuh 2 asks Numbuh Rebecca about why they don’t have a tree house, he learns that Sector A wanted to wait for the tree to grow on it's own because speeding up the process would be "lazy". Enraged over how shortsighted they are of how tree houses are made, he brings out a seed that instantly grows them a tree house.
When the Treehouse has fully grown, the "Splinter Cell" attack them. Numbuh 2 runs to get a weapon, but the Splinter Cell block the way. Then, Numbuh Jebadiah throws a weapon over to Numbuh 2. He gets ready to fight against the Splinter Cell when he find out that they were really just nerds that wanted Numbuh 2 and Numbuh Rebecca to come with them and watch a "Doctor Time Space in the Continuums" marathon with them.
- Numbuh Jebadiah - Leader
- Numbuh Ezekiel - Operative
- Numbuh Rebecca - Supposed to be 2x4 Technology Officer of Sector A, if they had technology.
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