“…Today there exists a vast literature on hierarchical location models, which can be traced back as early as to 1970s (see Narula, 1984Narula, (1984 for an earlier review). Those with some type of coverage objective have been studied mostly in health care systems (see for example, Afshari &Peng, 2014 andGüneş &Nickel, 2015 for reviews of such models), but there are also growing number of papers in other application areas. The more recent examples include facility location in banking (Min & Melachrinoudis, 2001), design of geo-location systems for search and rescue operations (Chan, Mahan, Chrissis, Drake, & Wang, 2008), response center location to combat effects of some chemical, biological, or nuclear accidents or attacks (Paul, Lunday, & Nurre, 2017), earthquake shelter location (Li, Zhao, Huang, & Hu, 2017), distribution center location in disaster management (Li, Ramshani, & Huang, 2018), court relocation (Teixeira, Bigotte, Repolho, & Antunes, 2019), and in last-mile delivery system design (Chauhan, Unnikrishnan, & Figliozzi, 2019).…”