We have utilized a rapid-transport target system together with a -ray range telescope to remeasure the half-lives of the N=Z, odd-odd nuclei As66 and Br70. We find they are 95.77 0.28 ms and 78.540.59 ms, respectively. The As66 result is in good agreement with the previous study, while the Br70 measurement differs somewhat from the previous result. 1988 The American Physical Society.