They founded the Pacific Missionary Aviation (PMA) to facilitate air travel throughout Micronesia.

[3] After World War II, he encountered a Russian doctor who converted him from atheism to Christianity.

[3] In 1950 Kalau entered the Theological Seminary of Liebenzell Mission to begin a four-year training to become a missionary.

[5]: 304–5  As part of an effort to fight alcoholism on Yap, Kalau helped construct a youth center.

[7] A part of the Kalaus' missionary work in Micronesia involved ferrying sick people to district hospitals on the mainland.

They established the Pacific Missionary Aviation (PMA) in 1974 to provide faster transport to the people of Micronesia.