diff --git a/README.md b/README.md
index f4171b0..2e4c00e 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ The main entry point is [src/service-worker/main.ts](src/service-worker/main.ts)
 ```
 ├── src
 │   ├── landing-page - splash screen displayed to users when making request to domain node, initializing service worker and fetching content from content nodes
-│   │   └── armada
+│   │   └── earthfast
 │   │       ├── fonts
 │   │       ├── images
 │   │       └── styles
diff --git a/cypress/e2e/manifest-failure.cy.ts b/cypress/e2e/manifest-failure.cy.ts
index 709dd32..686948e 100644
--- a/cypress/e2e/manifest-failure.cy.ts
+++ b/cypress/e2e/manifest-failure.cy.ts
@@ -10,6 +10,7 @@ it('manifest fetch on content nodes failure', () => {
   harness.intercept();
   harness.spyOnMessages(window);
 
+  content0.failResource('earthfast.json');
   content0.failResource('armada.json');
 
   cy.visit(harness.domainNode.url);
diff --git a/cypress/fixtures/checksum-mismatch/e2e/armada.json b/cypress/fixtures/checksum-mismatch/e2e/earthfast.json
similarity index 100%
rename from cypress/fixtures/checksum-mismatch/e2e/armada.json
rename to cypress/fixtures/checksum-mismatch/e2e/earthfast.json
diff --git a/cypress/fixtures/content-does-not-exist/e2e/armada.json b/cypress/fixtures/content-does-not-exist/e2e/earthfast.json
similarity index 100%
rename from cypress/fixtures/content-does-not-exist/e2e/armada.json
rename to cypress/fixtures/content-does-not-exist/e2e/earthfast.json
diff --git a/cypress/fixtures/css-relative-url/e2e/armada.json b/cypress/fixtures/css-relative-url/e2e/earthfast.json
similarity index 100%
rename from cypress/fixtures/css-relative-url/e2e/armada.json
rename to cypress/fixtures/css-relative-url/e2e/earthfast.json
diff --git a/cypress/fixtures/subdirectory-index/e2e/armada.json b/cypress/fixtures/subdirectory-index/e2e/earthfast.json
similarity index 100%
rename from cypress/fixtures/subdirectory-index/e2e/armada.json
rename to cypress/fixtures/subdirectory-index/e2e/earthfast.json
diff --git a/cypress/fixtures/v1/e2e/armada.json b/cypress/fixtures/v1/e2e/earthfast.json
similarity index 100%
rename from cypress/fixtures/v1/e2e/armada.json
rename to cypress/fixtures/v1/e2e/earthfast.json
diff --git a/cypress/fixtures/v2/e2e/armada.json b/cypress/fixtures/v2/e2e/earthfast.json
similarity index 100%
rename from cypress/fixtures/v2/e2e/armada.json
rename to cypress/fixtures/v2/e2e/earthfast.json
diff --git a/src/service-worker/src/armada/driver.ts b/src/service-worker/src/armada/driver.ts
index 6f6460c..42f8418 100644
--- a/src/service-worker/src/armada/driver.ts
+++ b/src/service-worker/src/armada/driver.ts
@@ -18,7 +18,8 @@ const IDLE_DELAY = 1000;
 const MAX_IDLE_DELAY = 5000;
 
 export class ArmadaDriver extends Driver {
-  public static readonly MANIFEST_FILENAME = 'armada.json';
+  public static readonly MANIFEST_FILENAME = 'earthfast.json';
+  public static readonly FALLBACK_MANIFEST_FILENAME = 'armada.json';
 
   // Override the state property so we can panic if the service worker ever attempts to transition
   // into a non-NORMAL state. We throw an error instead of just ignoring it because such a
@@ -203,22 +204,28 @@ export class ArmadaDriver extends Driver {
   }
 
   protected async fetchLatestManifestOnce(node: string): Promise<string> {
-    let resp: Response;
-    try {
-      resp = await this.apiClient.getContent(ArmadaDriver.MANIFEST_FILENAME, node);
-    } catch (err) {
-      const msg = `Error fetching manifest: node=${node} error=${err}`;
-      await this.broadcast(MsgManifestFetchError(msg));
-      throw err;
-    }
+    const filenames = [ArmadaDriver.MANIFEST_FILENAME, ArmadaDriver.FALLBACK_MANIFEST_FILENAME];
+    for (const filename of filenames) {
+      try {
+        const resp = await this.apiClient.getContent(filename, node);
 
-    if (!resp.ok) {
-      const msg = `Error fetching manifest: node=${node} status=${resp.status}`;
-      await this.broadcast(MsgManifestFetchError(msg));
-      throw new SwManifestFetchFailureError(msg);
+        if (resp.ok) {
+          return resp.text();
+        }
+
+        if (filename === filenames[filenames.length - 1]) {
+          throw new Error(`HTTP error: ${resp.status}`);
+        }
+      } catch (err) {
+        if (filename === filenames[filenames.length - 1]) {
+          const msg = `Error fetching manifest: node=${node} error=${err}`;
+          await this.broadcast(MsgManifestFetchError(msg));
+          throw new SwManifestFetchFailureError(msg);
+        }
+      }
     }
 
-    return resp.text();
+    throw new Error('Unexpected error in fetchLatestManifestOnce');
   }
 
   protected async probeLatestManifest(): Promise<Manifest> {