In this article, we discuss integration of distributed information services, to support the implementation of applications for fields of safety and security. Although there are standard interfacing technologies, such as SOAP and REST, there is very little architectural support for the development of personalized and case specific applications, where the same data sources and computational services are integrated in different ways. As the main contribution, we present here a distributed service architecture, called TiTiMaKe, that supports the development of scenario based applications. We also illustrate TiTiMaKe by describing its use in applications in fields of surveillance and emergency rescue.