The announcement of a new engine overhaul program by Pratt & Whitney Canada is directly related to Raytheon Technologies' business in the defense sector. This program could lead to increased demand for RTX's services, as it offers a cost-effective maintenance solution for widely used military helicopter engines. The positive impact on RTX's stock price in the short term is likely due to the potential for increased service revenue and the enhancement of the company's reputation as a provider of reliable and economical solutions for military operations.