Based on the provided sources and the conversation history, the historical development of military aviation in Grenada is characterized by the absence of a sovereign, independent air force and a reliance on regional security frameworks.

• Absence of a Formal Air Force: Throughout modern history, Grenada has never established an independent "Grenada Air Force". The nation is notably missing from historical and contemporary military aviation repositories, including the 1974, 1980, 1991, and 2026 air power reviews.
• Royal Grenada Police Force (RGPF): National security and aviation-related duties, should they arise, are the responsibility of the Royal Grenada Police Force (RGPF), which also oversees the nation's Coast Guard [Conversation History]. As of 2026, the RGPF is reported to have zero combat-capable aircraft and no active military aviation inventory [Conversation History].
• Regional Security System (RSS) Membership: Grenada’s security strategy is historically tied to its membership in the Regional Security System (RSS). The RSS is a collective defense organization for Caribbean states that focuses on maritime surveillance, counter-narcotics, and disaster relief. This collective approach negates the need for Grenada to maintain a costly, independent air arm [Conversation History].
• International Cooperation and Exercises: Historically, Grenada has relied on its relationships with the United States and the United Kingdom for security training and equipment donations. This includes participation in US SOUTHCOM’s Tradewinds, a regional disaster-response and security exercise designed to enhance interoperability between small Caribbean nations and international partners [84, Conversation History].
• Treaty Commitments: Grenada is a signatory to the Organization of American States (OAS) and the Inter-American Treaty of Reciprocal Assistance (Treaty of Rio) [Conversation History]. These agreements bind the nation to the peaceful settlement of disputes and a collective response to external threats, rather than individual aerial power projection [Conversation History].
• Indigenous Industry: Grenada has no indigenous defense industry. Consequently, any aviation capabilities required for humanitarian aid or search and rescue (SAR) are typically provided by international partners or the shared resources of the RSS [84, Conversation History].

In summary, the "history" of the Grenada Air Force is one of non-existence, with the country opting instead for a professional police force and deep integration into regional Caribbean security networks to manage its airspace and maritime territory [84, Conversation History].